That pins and needles feeling is uncomfortable, but not dangerous.

Does Your Arm or Leg Go to Sleep?

Ever get that “pins and needles” feeling in your arm or leg? This temporary and harmless tingling is caused by lack of movement, or constant pressure on that body part -- leaving those cells unable to transmit messages to your brain. The cure is super simple: change positions. Chronic pins and needles indicates a more serious underlying condition that should be evaluated.