Training
Do you use mostly compound exercises?
Do you have a proper training program or you just go in and play
around with the machines or worse still do you go to the gym to
check out this hot gal's cleavage while she do bent over rows or
Romanian deadlifts?
Do you try to make progress in your training as far as
possible(play around with the variables such as load,sets,reps
etc)
Feel free to add more factors... 
