Does Overmasturbation Cause Any Tremors With The Hand? Unfortunately, My

does overmasturbation cause any tremors with the hand? unfortunately, my closest friend goes with masturbation everyday, sometimes twice a day. i tell him it's unhealthy, but he does not listen. he's been doing it for i think a little over a year, and has shown me that when he supinates his hand, it shakes (hand he uses im assuming). is that a side affect?