Okay, I really really really don't know how people do this workout thing if they also have a day job. Because after an hour of workout with Sarah, I am utterly wiped, and am so glad to be back home and all I want to do is go curl up in my bed until my muscles stop trembling and my stomach settles down. I don't understand how people can do this in the morning and then GO TO WORK! Which I gather, quite a few of them do. Are they made of iron? When you prick them, do they not bleed???