So I used to kayak, mountain bike, spelunk, rock climb, rapell, dangle my feet over the railings of tall parking garages and anything else for a thrill…the rush…adrenaline.(aka epinephrine). Now-a-days I get the same rush with a 15 minute powernap..I fall into a deep relaxing sleep then jump from the bed in a panic when I realize I should be doing something else. You can watch my heart pounding through my chest when it happens.