Does anyone find that their productivity and motivation is greatly enhanced, as a result of physical exercise?

I find that after 2 - 3 days without hitting the gym, doing an outdoor run, or doing yoga at home (not at a class), I lose my drive.

I've got a 2 hour break this afternoon, so I'm gonna try and go to the gym to do a session of the weights. I normally just do the same full body workout. I don't really do it to build muscle, but more for the mental benefits in terms of increased focus and enhanced motivation.

What kinds of exercise do fellow MGTOW engage in, that boost your mental sharpness?