Hello everyone, I joined this site at the begining of October and I found it has helped me out alot with portion control. My questioned is this, I just finished my last session with a personal trainer and she did an assessment of me. Now in a month I have lost 10 lbs. but managed to gain body fat. Can someone explain to me how this is possible? and what i can do to change it. The trainer said because I have gained body fat it means that i have lost lean muscle. Now i know I don't do enough cardio as I should but I have been doing weights in a class as I have joined Goodlife fitness and go to their Bodypump class at least once a week if not twice and have training 3 times a week until a week ago when i dropped to once a week before i finished the training today. Any suggestions would be greatly appreciated.