Paresthesia

causes and prevention
examples include but are not limited to - EDS - repetitive stress - physical trauma - too much vitamin d - hyperglycemia - stroke - nutrient deficiencies - lyme disease (and other infections) - stroke -rheumatoid arthritis

citation at random search result: https://www.chronicbodypain.net/how-your-leg-falling-asleep-could-point-to-a-serious-problem/

preventions - get enough nutrients - regular yer blood sugar - take breaks when doing repetitive exercises

example
leg falling asleep while asleep