When most people hear the words “third trimester” and “training for a marathon” in the same sentence, they picture a very fit pregnant woman with a race bib and a birth plan stapled to her running shoes.
That’s fair. But this particular marathon has no course map, no mile markers, and absolutely no medal at the end — just a tiny human who will need everything, all the time, in ways that can’t fully be prepared for in advance.
This is a celebration of hitting the third trimester — and a very honest look at what “prepping for a marathon” actually means when the race you’re training for is motherhood.
The marathon of motherhood doesn’t have a finish line. It has checkpoints — each one harder and more beautiful than the last.
Training No. 1: Staying Fit and Active
Why movement matters in the third trimester — and beyond
Every marathon runner knows that the body is the foundation. No matter how mentally prepared a runner is, if the body isn’t ready, the race will suffer. The same is true for the marathon of motherhood.
Staying fit and active during the third trimester isn’t about aesthetics or “bouncing back.” It’s about building stamina for labor, for the postpartum recovery, and for the relentless physical demands of caring for a newborn — because carrying, feeding, soothing, and not sleeping is genuinely one of the most physically taxing things a human body can do.
Third trimester movement looks different for everyone. For some it’s prenatal yoga or swimming. For others it’s a daily walk around the block. What matters isn’t the intensity — it’s the consistency. Keeping the body moving prepares it for what’s coming in a way that nothing else can.
This isn’t training for a 26.2. It’s training for something that requires endurance every single day, often in the middle of the night, with no rest day in sight.
Training No. 2: Filling the Tank — Time with Family
Why presence now matters more than any to-do list
Experienced marathon runners know that recovery — real recovery — is part of training. Rest days aren’t optional; they’re where the growth happens. In the context of the marathon of motherhood, filling the tank means pouring into the relationships that will sustain everyone through what’s coming.
For families who are expanding, the third trimester is one of the last stretches of time where siblings and other family members have undivided attention. That matters. Not in a guilt-inducing way, but in a deeply intentional one.
Spending more time doing activities the kids love — going to the park, baking together, reading extra books, watching a favorite movie on a Tuesday afternoon — isn’t indulgence. Also, plan as many date nights as possible. It will be more challenging to get 1:1 time with your significant other once your bundle of joy arrives.
It’s preparation. It’s filling the family’s emotional reserves before a new person arrives and everything shifts.
Training No. 3: Clearing the Course — Decluttering
The mental load of physical clutter — and why clearing it changes everything
No serious marathon runner shows up to race day carrying extra weight. Decluttering the home before a new baby arrives is, in many ways, the same principle.
The physical act of clearing space — donating items that no longer serve the family, organizing closets, simplifying surfaces — has a well-documented effect on mental clarity. When the environment is calm, the mind tends to follow. And in the newborn stage, when everything feels chaotic and out of control, a decluttered home is one of the few things that can be controlled.
Third trimester nesting is a real, documented biological phenomenon. The impulse to organize, sort, and simplify isn’t irrational — it’s the body’s way of preparing an environment for arrival. Leaning into that impulse, rather than resisting it, is one of the most practically useful things a family can do before a new baby comes home.
Clear the course. The race is easier when there’s nothing in the way.
️ Training No. 4: Setting Up the Finish Line — Getting Rooms in Order
The nursery, the home, the space where everything changes
Every race has a finish line. For the marathon of motherhood, the nursery is the first major checkpoint — and getting it right before baby arrives is one of the few things that can be done in advance.
Getting rooms in order means more than assembling the crib or washing the tiny onesies (though both deserve the satisfaction they bring). It means thinking through the feeding setup, the sleep environment, the flow of nighttime wake-ups before they become the 3am reality.
Where will feedings happen? Is the bottle prep station accessible in the dark? Is the diaper changing area stocked and organized? These details, sorted in advance, reduce the cognitive load during what is almost universally described as the most cognitively demanding period of early parenting.
A home that’s ready isn’t a perfect home. It’s a functional one — built for the chaos that’s coming, designed with intention rather than scrambled together in a fog of sleep deprivation.
Training No. 5: The Mental Game — Preparing for What’s Really Coming
The real challenges begin at the starting line — not the finish
Here’s the truth about marathons that first-time runners always learn the hard way: the race doesn’t start at mile one. It starts the moment training begins. And for the marathon of motherhood, it starts the moment the baby arrives.
Mental preparation for the newborn stage isn’t about reading every parenting book or having a perfectly organized birth plan. It’s about cultivating the psychological flexibility to handle the unknown — because the newborn stage, however prepared a family might be, will not go according to plan.
It means acknowledging that bottle refusal happens — and that 61% of breastfeeding mothers experience it (Maxwell et al., Maternal & Child Nutrition, 2020). It means knowing in advance that sleep deprivation is a form of cognitive impairment, and that decisions made at 4am will not always be good ones. It means building a support network before it’s needed, not after.
It means accepting, before the starting gun fires, that the marathon of motherhood will demand more than any physical race ever could — and that the most important training isn’t in the gym. It’s in the quiet moments of intentional preparation, the honest conversations, the permission to not have everything figured out.
This Marathon Doesn’t Have a Finish Line.
So here’s the reveal — and if you’ve been reading closely, maybe it wasn’t entirely a surprise.
This isn’t training for a 26.2. There’s no race bib, no timing chip, no banana at mile 20. The marathon being prepared for is the marathon of motherhood — and it is, without question, the most demanding, most rewarding, most relentless race there is.
The finish line doesn’t exist. The checkpoints keep moving. The training never really stops. And every mother who has ever done this knows that the hardest parts — and the most beautiful parts — come not at the end, but somewhere in the middle, when the exhaustion is real and the love is overwhelming and the two feelings exist simultaneously in ways that are impossible to fully describe.
Bottimals was created somewhere in the middle of one of those hard parts — when a mom hit the bottle refusal checkpoint and found that no one had built a solution rooted in what the science of infant bonding actually showed. So she built it herself.
A patent-pending bottle-lovey® designed to carry mom’s scent to every bottle feeding — inspired by research on maternal scent and infant comfort — created for every family running their own marathon of motherhood and hitting the feeding checkpoint without a plan.
Because every checkpoint in this marathon deserves a solution that was made with the same intention, love, and scientific grounding as the one that started it all.
The marathon of motherhood is the hardest race there is. Bottimals was made for one of its toughest miles.
About Bottimals
Bottimals is a mom-invented, patent-pending bottle-lovey® designed to help ease bottle feeding challenges for breastfeeding families. Inspired by research on maternal scent and infant bonding, the Bottimals bottle-lovey® carries mom’s familiar scent to every bottle feeding — supporting comfort and connection when mom can’t be the one holding the bottle. Every baby is different, and individual results vary. Learn more at Bottimals.com.
References
1. Maxwell, C., Fleming, K.M., Fleming, V., & Porcellato, L. (2020). UK mothers’ experiences of bottle refusal by their breastfed baby. Maternal & Child Nutrition, 16(4), e13047. https://doi.org/10.1111/mcn.13047
2. Feldman, R., et al. (2021). Maternal chemosignals enhance infant-adult brain-to-brain synchrony. Science Advances, 7(50). https://doi.org/10.1126/sciadv.abg6867
3. Lundström, J.N., et al. (2013). Maternal status regulates cortical responses to the body odor of newborns. Frontiers in Psychology, 4, 597. https://doi.org/10.3389/fpsyg.2013.00597
4. Schaal, B., & Marlier, L. (1998). Maternal and paternal perception of individual odor signatures in human amniotic fluid. Biology of the Neonate, 74(4), 266–273. https://doi.org/10.1159/000014036
5. Babyment. (2025). The science of nesting: Hormonal and behavioral shifts in the third trimester. https://www.babyment.com/pregnancycare.php?pregnancy=The-Science-of-Nesting
6. Americord Registry. (2025). The truth about the pregnancy nesting instinct. https://www.americordblood.com/articles/the-truth-about-the-pregnancy-nesting-instinct
7. Goodwin, C. (2022). Adjusting to a new baby. Parenting Translator. https://parentingtranslator.substack.com/p/adjusting-to-a-new-baby
8. Volling, B. L. (2012). Family transitions following the birth of a sibling. Psychological Bulletin, 138(3), 497–528. https://doi.org/10.1037/a0026921
9. Harrison, Y., & Horne, J. A. (2000). The impact of sleep deprivation on decision making. Journal of Experimental Psychology: Applied, 6(3), 236–249. https://doi.org/10.1037/1076-898X.6.3.236
Disclaimer: The content on this blog is written by a mom sharing personal experience and research she has found helpful. It is not medical, nutritional, or professional advice. Always consult your pediatrician or a qualified healthcare provider with questions about your baby’s health and feeding.
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