I can totally understand that for you, @Eric – or possibly even for my son after a 2-hour swim practice. But for Jay Cutler – what are the stats for football, 8 minutes of actual action per game?
Yes, but in those 8 minutes you have to recover from two dozen car crashes. Can you imagine getting hit by these guys at full speed when you are the little quarterback. Shiver…
Absolutely for games, because of the hormones - cortisol, epinephrine /adrenaline. Having a 300 pound dude chase you around and trying to squash you would absolutely create hormone spikes. Or trying to run a 2 minute drill and win a game.
Plus, he is just doing quick bursts. 10 seconds all out, followed by 45 seconds of rest. That is akin to high-intensity interval training (HIIT). It is sprint followed by rest. That is a perfect recipe for spiking.