I lost 5 pounds and half an inch on my arms...in less than a week. It started when the family and I went on vacation where I was limited to about 1500calories a day and no lifting, and a bunch of running and playin around. That was a few weeks ago...I have gained nothing back. I have been eating the same amount as I did before I went on vacation, and am doing the same weight lifting stuff (that didnt go down...so i guess thats alright).