I know how nervous I was when I got my co-axial heli off the ground the first time, I almost couldn't breath. At the 5th flight, the scary part was over, but whenever I fly my heli again, I can feel the adrenaline rushing through my blood. I can actually use the adrenaline I get from flying to win from my brother when running. I can go 14mp/h normally, but with adrenaline, I can hit 20 and hold that speed for half a minute. Adrenaline is actually quite handy when flying heli's or planes. You can react faster, think faster, move faster and do anything faster. Adrenaline is part of the hobby.