For the days when you want to work hard but don't want to have to think too much the Out Of Excuses workout offers the perfect combination of heavy physical engagement and light mental work. It's a fast, focused workout that will get you sweating very quickly and then will have you breathing hard. The benefits are that as your body works, your mind recharges. You may end up feeling tired but you will definitely want to try and do this again.
Extra Credit: 1 minute rest between sets.