I sit ~10 hours daily, including 2+ hours driving. I'm naturally skinny but haven't done much physical exercises in recent years ("busy"). Now, at age of 34, I'm starting to realize that my body won't last forever and finally started to exercise few times per week, after I found motivating enough guide¹. It amazing how much more energized it makes you feel. [1] https://www.julian.com/learn/muscle/intro
I am looking into the no equipment, no gym style workouts that take 20 minutes.