My client's legs fall asleep while doing lunges (for 2-5 minutes) during my endurance "force" weight lifting class. Do you know what causes this?
Without the benefit of personal assessment, it’s difficult to say for certain why this is happening to your client. Legs falling asleep during lunges can be caused by nerve compression. There is no reduction in blood flow when you get the tingling feeling of a limb falling asleep. The tingling is called neuropraxia, which is a condition that causes a temporary interruption of transmitting nerve signals, resulting in limbs falling asleep (hitting your funny bone is an example of an ulnar nerve neuropraxia). Your client may want to try therapeutic massage, if she is not already.