The Adrenaline Shot： Sport Science.

We began this test with a simple question. Does adrenaline really increase performance? Could added adrenaline allow mixed martial arts star Houston the Assassin Alexander to actually punch with more force? We first established a baseline to see how hard Houston hits without adrenaline. Then we got him mad, really mad. All that rage I want it right now. I want you to unleash that beast. Come on, man. You can do this. No more disappointment anymore. Let's go. Flooded with natural adrenaline, Houston hit the crash test dummy with an amazing 1,000 pounds of force. That's 400 pounds, or 60% more force than he produced during the baseline. Now there's one last test to run. How hard will Houston hit when we actually inject him with a shot of pure adrenaline? Are you ready to do this? Come on. Here we go. Line yourself up. Check if he's all right. Houston, I'm going to check your pupil. How did the injection of epinephrine affect Houston's power? Remember, his baseline punch, with no adrenaline, registered at 600 pounds of force. Then, enraged by his trainer... Let me see it. You got me? Hit that thing. Let's go. His natural adrenaline produced a punch with 1,000 pounds of force. Jacked up on a dose of epinephrine, Houston delivered a punch with only 900 pounds of force. Incredibly, that's less powerful than the one fueled by his trainer's motivation.