22 year old male , my hands cramp up occasionally and left foot , usually don't exercise, can it be als symptoms? it does not run in my family ?

ALS: Amyotrophic Lateral Sclerosis is usually in people older than 40. Usual early symptoms include cramps, fasciculations and often spasticity. The symptoms can start in upper or lower limbs or even speech or swallowing problems. The condition is rare. I have seen two cases in twenty years. I would be more suspicious of a low potassium or magnesium to cause your symptoms.