Agreed with Hizzy. A balanced diet is the key. Equally balanced excercise. Weights will make you big, but not fit. You have to do the stamina and cardio work as well.

I tend to eat most things.... and too much!!!! Have just started on the training cycle again after an enforced year of rest. Didn't like it one bit. First time I've not done much since 15 years old!!! Noticed that putting on weight is very easy when you slow down....