Well i'm no expert but just use yer common sense, once you start doing regular exercise at a gym you will begin to lose weight believe me, i'm living proof. But then its no good leaving the gym and calling at the pub for 5 pints and getting fish n chips to walk home with. Whatever you like eating eat smaller portions, drink 6 pints of water a day, fruit, yoghurts instead of snacks, plenty of fish meals, chicken, pasta, .....i'll shut up as i aint really got a clue.
