Moving large muscle groups through activities like resistance training or running triggers adrenaline release, which increases energy and willingness to move.

“But there's this phenomenon where when you move the large musculature of the body, so a resistance training workout, a run, probably any workout where you're doing some big movements or you're working hard in that workout, it triggers the release of adrenaline at levels that wake up your body, make it more willing to move.”