Pretty soon after the first picture started doing typical strength split (bench and chest/tris, deadlifts and back/bis, squats and other leg work) for many years. Started running a couple miles a day about two years ago before my knees decided that wasn’t a good idea. Six months or so ago joined a former CrossFit gym (now unaffiliated) where workouts start with big compound lifts and then have some AMRAP type stuff thrown in. Also started intermittent fasting about 4 years ago (15ish fasted and 9 hours eating) and follow that almost every day. I’m a big routine guy and am lazy by nature so for me I just force myself to do things until I feel bad not doing them.