Reclaiming Yourself: Postpartum Nutrition for Active Moms

In 2025, I became a mom to an amazing baby boy, and my life changed forever. Despite being an active, high-energy, and generally very resilient woman, I was shocked by how difficult the first 6 weeks of motherhood were, let alone the first year. Between a difficult birth, early breastfeeding difficulties, my son’s tongue and lip ties, intense sleep deprivation, going back to work at 12 weeks, and intense anxiety-provoking nanny difficulties (leading to letting our first nanny go after 9 months and having no consistent childcare for 6 weeks, though we did get a lot of help from our parents before we found our wonderful new nanny), it was a heck of a year. 

I began running again 3 months postpartum to manage stress and boost my energy. I even ran two half marathons, a 10k, and an 8-mile race during my first postpartum year (keep in mind that I’ve been a runner for years and ran up until week 38 of pregnancy, so this was not a complete shock to my system). Yet, during the thick of that year, I wondered if I’d ever really feel like myself again. 

If you are a new mom navigating postpartum recovery while trying to reclaim your identity as an active woman, I see you. 💜 I’ve been there. 

The truth is, getting back to training after having a baby isn’t just about lacing up your running shoes or hopping back on your mountain bike at the 6-week mark and hitting the trails again (this is probably too early for most women, by the way, just ask a pelvic floor specialist…). It’s not about “bouncing back,” and it is definitely not about restricting calories and pushing through exhaustion to lose the baby weight as quickly as possible.

In this blog, I want to share what I’ve learned, both professionally and personally, about truly supporting your body nutritionally during postpartum recovery and reengaging in physical activity and training in ways that respect your biology and nourish rather than deplete.

The Postpartum Athlete Reality: Why Everything Feels Harder

I remember running my first “race,” the Boulderthon 10k, which I hesitate to call a “race” because my only goal was to finish, 5 months postpartum. I had woken up 6 times the night before to nurse and comfort my son. My legs felt heavy during the race, and my body felt unfamiliar – puffy and exhausted. I finished the race, but I honestly felt terrible. I realized then that I needed to take a step back and REALLY take care of myself as I eased back into running. 

I realized that pre-pregnancy fitness isn’t waiting for you just on the other side of that 6-week appointment that clears you for exercise. Your body has been through three profound physiological events: growing a baby for 9 months, birth, whether you delivered vaginally or via C-section, and potentially breastfeeding. 

These three physiological events require nutrition support in three categories, especially if you are trying to ramp up your physical activity postpartum: replenishment, recovery, and resilience. 

Replenishment

Pregnancy and breastfeeding heavily deplete your nutritional reserves, including but not limited to micronutrients like iron, folate, choline, omega-3 fatty acids, and calcium. (Source, Source, Source, Source, Source) These nutrients are raw materials your body needs to produce energy, synthesize hormones, repair tissue, support your nervous system, and (if you’re breastfeeding) support the growth of a second human being. Your body also needs these nutrients to fuel physical activity, including oxygen transport, muscle function, and muscle recovery. If you are already entering postpartum with depleted micronutrients, you won’t have enough available to fuel the additional demands of physical activity.

Think of your body like a bank account. Pregnancy and birth represent a massive withdrawal. You’ve withdrawn your reserves of iron building your blood supply, used up B vitamins supporting baby’s rapid cell division and growth, and your bones have released calcium. Your tissues have been stretched (maybe even torn) and are trying to repair.

This is why I strongly feel that postpartum women need to have a strategic nutrition plan, not just think about eating enough calories. Yes, you absolutely need sufficient calories to maintain your energy and milk supply, but you also need deep nourishment. In the postpartum period, the ideal timing can vary from one woman to another. Under the guidance of a qualified nutrition professional, I recommend a comprehensive nutrient panel to assess your vitamin, mineral, and fatty acid levels. This is one reason I include a comprehensive micronutrient panel in my Trailblazer Nutrition™ program. This is also why trying to lose weight too soon postpartum by restricting your food intake (and thus your micronutrient intake) can be a recipe for disaster, hurting your energy, mental wellbeing, recovery process, and milk supply.

If you don’t nourish your body well in the postpartum period, you may experience postpartum depletion, a state of profound physical, mental, and emotional exhaustion that can persist anywhere from months to years after giving birth. If you want to get back your energy, zest for life, and ability to be active, you need to avoid falling into the trap of postpartum depletion.

Potential signs of postpartum nutrient depletion may look like:

• Chronic (and sometimes debilitating) fatigue that doesn’t improve with the sleep you get
• Hair loss beyond normal postpartum shedding
• Brittle nails that easily break, have white spots on them, or have visible ridges.
• Brain fog and difficulty concentrating
• Mood changes, anxiety, or depression
• Slow wound healing
• Frequent illness
• Poor exercise recovery
• Low or declining milk supply (if breastfeeding)

Altogether, this is why nutrient repletion needs to be the foundation of your postpartum nutrition plan, not weight loss.

A crucial note on postpartum depression: I would be remiss not to discuss the potential role of nutrition in postpartum depression. I dealt with postpartum depression in waves throughout the first year of my son’s life. For some women, there are nutritional influences in postpartum depression, such as low omega-3 fatty acids. (Source) For me, postpartum depression was related more to feeling extremely overwhelmed and unsupported in my postpartum life. Once I made some changes to enhance my support system and removed the things and people that were not supporting me, my mood improved dramatically and has stabilized (no medication required). If you are struggling with postpartum depression, please contact your healthcare provider to discuss your options, as this is a serious condition that requires attention. 

Recovery

Why does the postpartum recovery process take so many women by surprise? Personally, I felt inadequately prepared for how slowly the recovery process went. After growing and birthing a baby, your body must undergo a lot of tissue repair. On top of that, studies examining muscle health show that chronic sleep disruption is associated with increased inflammation and impaired muscle recovery and strength. (Source, Source) While I haven’t found any studies looking specifically at postpartum sleep deprivation and tissue recovery, I can’t help but wonder whether the sleep deprivation impairs tissue recovery postpartum. Getting your nutrition right, including total caloric energy, protein, carbohydrates, and micronutrients, is essential for promoting recovery from pregnancy and birth. 

In addition, your core and pelvic floor need rehabilitation after pregnancy and birth. Diastasis recti, pelvic floor dysfunction, and core weakness are common postpartum issues that affect your ability to train safely and effectively. Jumping back into high-impact activity without addressing these can lead to injury, incontinence, or pelvic organ prolapse. Seek the care of a pelvic floor specialist for help with these issues.

Resilience

Motherhood demands a LOT from you, including your love, energy, mental capacity, time, sleep, and nutrient stores. Eating to support your body’s total resilience, your ability to adapt to and recover from change and difficulties, is essential. Along with nutrient replenishment, this means eating to support balanced blood sugar control and your hypothalamic-pituitary-adrenal (HPA) axis, the system of organs and hormones that regulates your body’s stress response. 

To get you started, here are some foundational recommendations for eating for postpartum resilience, including blood sugar and HPA axis support: 

• Eat breakfast – and make it substantial. Aim for at least 25-30 grams of protein, complex carbohydrates, whole food sources of fiber, and healthy fats like nut butter, olive oil, avocado, or butter. This sets the tone for stable blood sugar throughout the day. 
• Build your day around at least 3 balanced meals, and include balanced snacks as needed. Balanced meals should always include a protein, a complex carb, fiber from whole food sources like veggies and fruit, and healthy fats. This isn’t about grazing constantly; it’s about preventing erratic eating patterns that put your blood sugar on a roller coaster, leading to energy crashes, cravings, and that sudden, urgent desire to take a nap at 3 pm. Snacks should also be balanced: protein and carbs. Avoid naked carbs—eating carbs all by themselves.
• Don’t fear carbohydrates. As an active woman, you need carbohydrates to fuel physical activity and support basic bodily processes, such as brain function. Your brain runs on glucose. Your muscles need glycogen for training. If you’re breastfeeding, milk production requires carbohydrates. The low-carb approach that might have worked for you pre-pregnancy is likely to backfire postpartum, leaving you exhausted, irritable, and potentially tanking your milk supply. I include whole-food, complex carbs at every meal, such as sweet potatoes, steel-cut oats, quinoa, legumes, and fruit, just to name a few examples.
• Hydrate strategically. Dehydration exacerbates fatigue. (Source) Maintain your fluid needs with plenty of filtered water and incorporate electrolytes strategically. Make sure you’re hydrating properly during exercise too.

When Does Intentional Postpartum Weight Loss Make Sense?

Let’s talk about the elephant in the room: baby weight.

I know the pressure you feel to lose the baby weight. I’ve felt it too. Social media is a toxic place when it comes to promoting postpartum bounce-back culture. But here’s the reality – in my professional and personal experience, making weight loss a goal in the first six months postpartum is, in most cases, premature and potentially harmful. If you naturally lose weight postpartum (you’re bound to lose some once baby is out, your uterus returns to its normal size, and your blood and total fluid volume decrease), actively pushing yourself to lose more weight is not something I recommend in those early months.

But actively pursuing weight loss through calorie restriction and/or exercise during the early postpartum period carries real risks:

1. Compromised milk supply. If you’re breastfeeding, aggressive calorie restriction can reduce milk production. I’ll just go ahead and say it – your baby’s nutrition is more important than fitting into your pre-pregnancy jeans weeks or months postpartum. Despite what you’ve been told about how breastfeeding will make the baby weight “melt off,” many women experience the opposite – their intelligent bodies strategically hold on to some extra weight throughout breastfeeding, presumably to keep sufficient energy available for breast milk production. 
2. Nutrient depletion. Back to the nutrient depletion conversation – restricting food intake to attempt to lose weight further limits your ability to replenish critical nutrients, which can lead to chronic fatigue, hormonal imbalances, mood disorders, and impaired immune function.
3. Hormonal disruption. Undereating, especially combined with overtraining, can suppress thyroid function, disrupt menstrual cycle return, lower estrogen and progesterone, and keep cortisol chronically elevated. These hormonal imbalances can actually make it harder to lose weight in the long run and can impact your fertility if you’re planning to have more children.
4. Loss of muscle mass. When you’re in a calorie deficit without adequate protein and strength training, your body will break down muscle tissue for energy. Less muscle means a slower metabolism and reduced functional capacity, the opposite of what you need as an active parent.
5. Disordered eating patterns. The postpartum period is already emotionally vulnerable. Adding the stress of restrictive dieting can trigger or exacerbate disordered eating behaviors and negative body image.

So when IS the right time to think about weight loss? In my practice, I generally recommend waiting until you are at least 6 months postpartum, in a decent sleep routine, with stable energy throughout the day, have addressed nutrient deficiencies, and have the mental and emotional bandwidth to focus on this goal. For some women, I may also recommend waiting until their menstrual cycle has returned, if that takes longer than 6 months.

As an active woman, your approach to postpartum weight loss matters enormously. It should be gradual, fueled by nutrient-dense foods, avoid large calorie deficits, flexible, and ideally monitored by a nutrition professional and a lactation counselor if you are still breastfeeding. 

Training for a Marathon with a Baby: What’s Actually Working

When I registered for a marathon this upcoming fall (Boulderthon in Boulder, Colorado), my baby was a year old. Do I feel uncertain about it? Yes, I do. But I also feel ready for a new goal. I also feel more confident after recently placing second in my age group in a local half marathon in Arvada, Colorado. ☺️Training postpartum looks different from before, and I’ve had to make peace with that. Here’s what I’ve learned:

• Flexibility is the plan. Some weeks I hit every workout. Other weeks, issues like teething, a busier work schedule, or wildfire smoke preventing me from running outside require me to change my plans. I’m trying to be as flexible as possible while continuing to work towards my goal.
• Recovery is training. I used to think recovery was for rest days. Now I understand that as a postpartum athlete, recovery is happening 24/7. This means prioritizing sleep when possible (I have been taking naps a couple of times a week, even though I want to use that precious time for other things), managing stress, and fueling optimally.
• Fueling around workouts is critical. I avoid training fasted, even for my 5:30 am morning workouts. I have a small, easily digestible snack 30-60 minutes before runs, such as applesauce or a banana. I always eat a recovery meal within 30 minutes of finishing my training session. 
• Getting outside is vital. Living in Conifer, Colorado means I have incredible access to mountain trails, and I’ve been intentional about incorporating them into my training. The Alderfer/Three Sisters Park trails offer varied terrain and beautiful views without being overly technical. Staunton State Park is perfect for longer, steady efforts. Running these trails is mentally and emotionally restorative to me.

TheTrailblazer Nutrition™ Program: Personalized Support for Your Postpartum Journey

If you’ve read this far, you might be thinking: “This all makes sense, but I don’t know how to apply it to my body, my situation, and my goals.” I have you covered with my Trailblazer Nutrition™ Program! This comprehensive, personalized nutrition program is designed to help active people like you boost their energy, balance hormones, build strength and resilience, and live an active lifestyle. Here’s what we’ll do to support your active postpartum:

• We start with assessment, not assumptions. The Metabolomix+ nutritional test provides objective data on your unique nutrient levels needed for energy production, mental health, hormone balance, and training. This takes the guesswork out of supplementation and dietary recommendations.
• We address your foundation first. Before we talk about training nutrition or weight loss, we focus on nutrient repletion, blood sugar stability, and balanced fueling for daily life. 
• We integrate your physical activity goals. Whether you’re working toward your first postpartum 5K or training for a marathon, we create a fueling strategy that supports your training volume and intensity while maintaining energy for motherhood, your career, and life as a whole.
• We approach weight loss (if appropriate) thoughtfully. If and when the timing is right, we create a gradual, sustainable approach that prioritizes nutrient density, sustainable changes, and close monitoring of your health.
• We adjust as you go. Postpartum recovery isn’t linear. Your needs will change as your baby grows, your sleep improves, your training volume increases, and your hormones stabilize. We check in regularly and adjust your plan accordingly.

You don’t have to figure this out alone; you CAN balance being a mom and being active, and you don’t have to sacrifice your health to achieve your goals. You are NOT being selfish for taking care of yourself; self-care is essential for your success and health as a mother.

You deserve to feel strong, energized, and capable now in the thick of your postpartum season, not just someday down the road! 

Are you ready to take the next step? Schedule your complimentary discovery call to learn how the Trailblazer Nutrition™ program can help you experience a vibrant, healthy, and active postpartum period.

The content provided on this nutrition blog is intended for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this blog.

The information and recommendations presented here are based on general nutrition principles and may not be suitable for everyone. Individual dietary needs and health concerns vary; what works for one person may not be appropriate for another.

I make every effort to provide accurate and up-to-date information, but the field of nutrition is constantly evolving, and new research may impact dietary recommendations. Therefore, I cannot guarantee the accuracy or completeness of the information presented on this blog.

If you have specific dietary or health concerns, please consult a qualified nutritionist or another healthcare professional for personalized guidance.

Lindsay Christensen, MS, CNS, LDN

I empower others through nutrition to conquer their mountain adventures, drawing from my own experiences.

With a background in Biomedical Science and an M.S. in Human Nutrition, I’m a Certified Nutrition Specialist and Licensed Dietitian Nutritionist. My journey in functional medicine has equipped me to work alongside athletes and tackle complex health cases. As a passionate trail runner, backcountry skier, and backpacker, I strive to support others on their paths to peak performance and well-being.

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