Husband Started To Shake Violently While We Were Asleep Asked

Husband started to shake violently while we were asleep asked him what was going on, he said I'm freezing. Checked his blood sugar, history of hypoglycemia. Checked his blood pressure, 119/80/97 pulse. Checked ., 99.1. Covered with extra blanket. He has been shaking for 30 minutes now and doesn't want me to call an EMT. He is 76 years old. WHAT IS REALLY GOING ON??