I just started squatting two days ago because I am home for easter/spring break and there is a pretty nice gym I can go to here. I haven't squatted since freshman year in highschool and I want to start lifting and doing the 5x5 routine. The first day i tried squatting I lost circulation in my whole right arm after about the 4-5 rep of each set. The numbness eventually went away and I could do other things that day. Today, I did it with a sweatshirt on to see if it would help but at the 4-5 rep of each set I would start to lose circulation and my arm would tingle. I couldn't really doing anything the rest of my time at the gym such as dips and chins. That arm was so weak it would just fall when attempting anything. Is their a reason for my loss of circulation? The bar does not hurt me at all, my right arm just goes numb.