I don't know if it's just me, but if I'm doing a workout and the instructor is all sweet and nice and says "Hey, it's okay! If you need a break, don't sweat it; Just take 5 and jump back in!", then my natural response will most likely be "Okay, I'll take a break. See you tomorrow." and walk away. A lot of people may say Jillian Michaels is bitchy, but what she does works because I NEED negative motivation in order for me to actually do something. Her workouts are strenuous and unforgiving, but they give me results, and that's what I love. Some famous Jillian quotes: "I've got 400 pound people who can do jumping jacks, so can you!" "Unless you puke, faint, or die, KEEP GOING!" "Why are you going to choose failure when success is an option?" "One of two things are going to happen today. You are either going to die on this treadmill or you are going to walk." "I don't care if you die on that floor, you better die looking good!" "Selfish isn’t a dirty word. It means we take care of ourselves and are able to give back."