Fresh air > 5 hour energy. Regardless of who endorses it. I understand where you're coming from. But I wouldn't rely on it at all. I've fallen asleep in my tree stand during bow hunting. Dangerous? Yes, that's why I do it, but seriously take a highly caffeinated soda out with you. That might help, and it's a lot cheaper. I checked the prices on that energy stuff. Not worth it at all, not even to stay awake at work even if your boss is gunning for you.