I built a "desk" on my treadmill. I walk 3+ hours @ 2.5 MPH pace @ 10% incline/grade 4-5 times/week while working. (I've increased the incline as it got less di

I built a "desk" on my treadmill. I walk 3+ hours @ 2.5 MPH pace @ 10% incline/grade 4-5 times/week while working. (I've increased the incline as it got less difficult.) To walk any faster makes it difficult to work on a computer. For the other 2-3 times/week (and over the course of 5-6 hours throughout the day), I do strength-training while working, all with "at-home" products (pull-up/chin-up bar, Perfect Pushup stands, dumbbells, ab exercise). The ab exercise I use is https://valme.io/c/health/fitness/t0qqs/my-abs-arent-steel-just-yet-but-maybe-could-be-described-as-12-inch-of-solid-wood/ https://valme.io/c/health/fitness/t0qqs/my-abs-arent-steel-j..., and it still kicks my butt after almost 2 years. P90X rocks. As to diet (which you MUST not ignore), I eat a lot of protein during the day (protein bars, protein shakes), in addition to vegetables and fruits, and try to limit myself to under 50g of sugar (only 25g daily from desserts). I also fast a few times each month for never less than 24 hours (sometimes I make it to 40). Gave up soda decades ago (which used to be the only way I could keep coding for so long). It wasn't until I started paying attention to diet that I saw enormous improvements in my abs. I'm probably in the best shape of my life and thinner/more muscular than I was in undergrad. The hardest part was getting the routine started. Once I saw improvements after a few months, the rest was "easy."