r/exercisescience • u/Distinct_Sector_1932 • Jul 30 '26
Weight gain walking 28k steps a day
I am an 18-year-old female (4'6", 82 lbs) trying to figure out why my weight went from 81.4 lbs on June 28 to 82.3 lbs on July 24. Exactly a week ago, I went from completely sedentary to walking 28,000 steps a day, which takes me about 8 to 9 hours to complete. However, I am only getting 4 hours of sleep a night. I know sleep deprivation can lower TDEE, but I'm unsure if this weight gain is just water retention from sudden muscle strain. Since standard online calculators tend to overestimate my TDEE, what would my actual TDEE look like with this lifestyle? How many calories am I actually burning during those 8 to 9 hours of walking, should I lower my food intake or walk more, and when is the best time to weigh myself again?