For me, too much of anything gets me off kilter. Signs that I am hypomanic/manic are grandiosely and too energetically trying to do more than I can do.

For me, excessive exercise leads to burnout, to stop exercising at all, and/or injury or strained muscles.

There have been times when I may get somewhat hypomanic with moderate exercise, but I am on the lookout for this and do self-help to become more balanced.

I also sometimes have brief touches of hypomania (energized and euphoric with grandiose ideas) during a pleasant shower. Again, I am on the lookout for this and nip them in the bud.

For me, I don't think either moderate exercise or regular showers has launched a hypomania episode. Exercise and showers in moderation are both more important for my coping and mental health than not doing them. When I don't do them, it may be a signal that I may be slipping into depression.