i dont know if it is natruall or what but before the shoot i am very calm,,alittle wobbly in the legs and my heart get to racing but i still and very calm,,,then after i realese that arrow,,excitment(or the dreaded frustion of a miss) takes over and i have to sit down cause my legs get so weak and i start beathing real heavy and as others have said it is the best feeling in the world and that is the reason that i love to hunt is for the thrill of the hunt,,