I did at 36, Went from 250lbs to 185lbs in 7 months. I have a spinal condition so no heavy weights (nothing over 35kg) so lots of reps, pull-ups, calisthetics

I did at 36, Went from 250lbs to 185lbs in 7 months. I have a spinal condition so no heavy weights (nothing over 35kg) so lots of reps, pull-ups, calisthetics and eating a 1500 calorie a day diet (which sucked but I adapted remarkably quickly), I've kept the weight off for 18mths and I'm still 185. It's a lot easier to maintain fitness than lose it and get it back. Going from a 44" stretch back to a 32-34" (depending on brand) waist in jeans was a nice feeling but the main improvement was energy levels, once I binned the sugary energy drinks and got use to drinking a few cups of coffee sweetened with a tea spoon of honey my energy levels through the day leveled out and I started sleeping better as well (which given the spine stuff was a major win). I'll stay in shape for as long as I possibly can do.