Thought I'd also add that I am exhausted...all the time. Part of it has to do with my crappy sleep schedule...have been through a divorce and getting a schedule around kids as a single mom has me with 6-7 hours sleep every night and I play catch up on the weekends. I try to catch a half hour nap between when I get home from work and the kiddos get home from school. When I sleep during that nap I sleep really incredibly deep and when I have to wake up, I often have shakes and my mind feels like I took a bunch of sleeping pills. It takes a little bit of time before it wears off. I have only started having this problem since I started working out, so I'm guessing either I need more sleep, more food, or both. Just not sure what exactly to do.