exercise gives you a ton of time to think which can be really depressing as in my case I my mind just drifts to how little I've accomplished, how I have no hope for the future and how I'm never going to have the only things I want.   This is why exercise is more than just a fitness thing. It's a form of meditation. Those thoughts and feelings are always with you but during exercise they come to the surface. You can choose to accept these realizations and let them be your driving force or bury them in rationalizations and jelly doughnuts. Seriously quit eating so much crap and lose some weight fatty! Fun fact I caused a therapist to lose his shit talking about this and it's relation to healthy eating habits. I mentioned the cognitive dysfunction caused by obesity and it's feedback loop of rationalization and denial. The mindfulness therapy helps with my ADHD. A therapist with a brain would be nice though rather than stupid fat ass following a protocol that he does not fully understand considering he can't recognize his own cognitive dissonance right in front of his face. /rant