Staying fit has a number of benefits for me. It reduces my stress, improves my confidence, provides certain presumptions in my interpersonal interactions, and, hopefully, buys me some more quality time on the planet. I have to set a good example for my students, so every time I'm tempted to take an unscheduled break, i remember my function as a role model and get off my butt. I have a much better feeling about working out than I did even just a few years ago. Now I train more for function and less for vanity.
Today I'm going to do an Olympic lifting program and possibly some yoga. tomorrow will be more of a conditioning/metabolic routine.
Theodore Roosevelt said his father taught him to be both "manly and gentle" and if he was manly enough, people would not attempt to take advantage of him for also being gentle.