I have been lifting naturally for the last 4 months...lifting 5 times a week and have my diet in check .... I have gained about 14 lbs since I started lifting and am very happy with my current results...The last few times I have been in the weight room, I have been experiencing a deep pain (feels like bone pain not muscle) in my left arm...My pain resonates on both sides of my forearm and is almost unbearable at times...Does anyone know what could possibly be the cause for this? Is this all part of "growing pain" or could it be a more serious problem...thanks for the help.