And it turns out, I need an even bigger body to accomplish my goals. I thought I was fueling well. I thought I was eating enough, given that my weight was stable, if not going up. But it turns out my body needed more, a lot more.
The little bit of weight gain I experienced while marathon training? Well, that was probably due to the training, as a small weight gain is related to higher metabolism, hydration, and training (1HUTTBOLE, 2026). Two to five pounds during a marathon training cycle reflects muscle mass, more glycogen, and more water stored with that glycogen (Gaudette, 2026). It turns out that my body needed more actual weight, though. It needed more weight to feel safe, to protect itself. I was fearing weight gain more than injury, and then the injury happened (Sekely, 2026). I never intended to set out on this journey to build a bigger body, but my stress fracture brought me to it, and I hope nutrition and weight gain will bring me through it.
It turns out that being heavier is actually better for my skeleton. "Being lighter doesn’t necessarily mean you’re putting 'less stress' on your skeleton especially if it means you’re falling into a state of low energy availability" says Registered Dietitian Serena Marie (2026). While I was not intentionally in a state of low energy availability, that was the only cause medical professionals could hypothesize as a cause of my injury. Additionally, my bone density was lower than "normal," and the only way to fix that was to gain weight in order to increase load on the bone (Haver, 2026). Then I had to grow bigger muscles to support that bone. And so I set out to do what the professionals told me: Eat in an energy surplus and then lift heavy.
It was not fun or easy to eat like a marathoner while not running. I guess I thought if I was in an energy deficit, my body would course correct as I ate more. Not so. It turns out that my body, just wanted to gain weight, and that weight gain happened quickly. I wrestled with it greatly. My clothes did not fit the same. I felt gross. I started to not recognize my body. Apparently this period of weight gain is something that happens to a lot of runners as they start to fuel correctly (Alm, 2026). I just started running a lot later in my life, and so the associated weight gain and body changes had to come later, when I already had a long history with a different body.
I will be honest that I initially fought the body changes, but I realized I could not continue living at war with myself every single day. So I had to change my goals. I had to change my goals to be to see how strong I could get, regardless of body size. I had to accept that I might need to buy all new clothes. I had to decide to live for my future self and not just my comfortable now self.
I have hopes that there are more running adventures (and maybe even more personal records?) on the other side of this. I have read stories where this is true (Amy Elizabeth, 2026, Infeld, 2024; Infeld, 2025; Quiet-Painting3, 2025; Run_Fast3r, 2023). But more than anything, I want to be healthy. I want to run longer. And I hope, to learn to accept myself in new ways. To quote Therapist Emily Brazier (2025), "So yeah, my body has changed. But so have I." I hope I get to the point that she did to say, "And I’m really proud of both."
So here's to the weight gain. Here's to the change. Lord help me!
References:
Alm, M. [Host]. (2026, June 19). Q&A with Maddie - 32. [Audio podcast episode]. In Fueling Forward. https://rss.com/podcasts/fuelingforwardpodcast/2925615/
Amy Elizabeth. [@TinkGoesToArizona]. 2:59 → 2:44 On Monday in Boston, I closed the chapter on every PR I set while underweight.I’m a completely [Photograph]. Instagram. https://www.instagram.com/p/DXfIacWgXvS/).
Brazier, E. (@_healingwithemily_). Let’s be honest, my body has changed… a lot. And I’d be lying if I said I don’t still have [Photograph]. Instagram. https://www.instagram.com/p/DX2ZyyUinlj/
Gaudette, J. (2026, April 29). Weight gain during marathon training: 3 causes explained. Runners Connect. https://runnersconnect.net/weight-gain-marathon-training/
Haver, M. C. (2026). The new perimenopause: An evidence-based guide to surviving the zone of chaos and feeling like yourself again. Rodale books.
Infeld, E. [@EmilyInfeld]. (2024, February 21). PSA to runners - skinnier is not faster! I get so sad when younger runners are worried about their weight and [Video]. Instagram. https://www.instagram.com/reel/C3oH6lGApVb/
Infeld, E. [@EmilyInfeld]. (2025, November 17)). I didn’t get faster by getting smaller — I got faster by fueling. My running has never been defined by how [Photograph]. Instagram. https://www.instagram.com/p/DRLKoDKEoWa/
1HUTTBOLE. (2026). Does anyone else gain weight when running more? [Online forum post.]. Reddit. https://www.reddit.com/r/Ultramarathon/comments/1r6fcte/does_anyone_else_gain_weight_when_running_more/
Quiet-Painting3. (2025). I’ve found fueling to be the key for me. It allows me to train and recover better. I haven’t weighed [Comment on the online forum post Getting faster despite having a heavier scale weight.]. Reddit. https://www.reddit.com/r/XXRunning/comments/1kzrewv/getting_faster_despite_having_a_heavier_scale/
Run_Fast3r. (2023). Extra weight won’t slow you down unless you gain too much body fat. Gaining weight by lifting weights and eating [Comment on the online form post Gaining weight as a distance runner]. Reddit. https://www.reddit.com/r/trackandfield/comments/12vgq6e/gaining_weight_as_a_distance_runner/
Serena Marie. [@SerenaMarieRD]. (2026, May 1). Being lighter doesn’t necessarily mean you’re putting “less stress” on your skeleton esp if it means you’re falling into a [Photograph]. Instagram. https://www.instagram.com/p/DXzAUV6R_rV/)

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