I start every leg day with 2 warm up sets and 4 work sets of squats. I don't go that heavy, I aim for between 8 and 12 reps on every set. The problem is, once I get home from the gym, the back of my neck where the bar rests is swollen and red and hurts when is touched. Does this happen to anyone else and is it normal? I know my form is correct when performing squats but the bump on the back of my neck is pretty big. Thanks for your help.