Hey, I weighed about 13 and a half stone with about 15% body fat. I decided to go on a heavy protein diet involving about 1000 calories per day, and also go to the gym 4-5 times a week. In the last 2 weeks ive leaned up quite a lot, probably getting down to around 13 stone, but my concern is muscles loss, will i start to have drastic losses on my muscles?