Hey guys, First of all i'd just like to say this forums great! I've lurked here for quite a while waiting to build up the courage to the join the gym, which i did today! Heres a little info about me: I'm 16 I'm male I'm roughly 5'11 tall I weigh 140ish pounds My Bf% is 12 And im not very heavily built (especially compared to some of you guys and gals!) I was led around the gym today, as i've never actually been in one before, and shown what machines do what. Eventually we got the good part, the weights room. Most of it i could handle with good posture and i was quite steady. However, some exercises i could barely do at all. For instance, when i tried out benchlifting (lifting just the 20kg bar), it didnt feel too heavy but i just couldnt push the bar up without it wobbling all over the place. I guess my query is whether this is because of my lack of muscle mass/ endurance, or whether its because its just a completely new exercise for me. Whatever the answer is, im still going to lift . Thanks for all your input, Jamie.