In need of a new adventure, have become something that is not quite sedentary, not complete. What energy there is, spent riding a bike in the heat, neither wasted nor saved. If you squander the kinetic it dampens the potential. I hardly have a vestige of vigor remaining with which to grumble.
Don't worry about me. I am still looking online at young naked women and exotic bikes to buy. The accretion of mass potential energy rolling up in adipose rings around me, giving my arms a soft bumper when they collapse into me with exhaustion or surrender. I currently need to lose more weight than that bike weighs - 16.3 pounds. There are some who might force themselves to lose the weight before buying the bike - poor spirits.