Quivering Muscles Shouldn’t Shake Us Up

An LA Times’ readers named Deborah wants to know if the involuntary shaking of muscles during heavy workouts is something she should worry about. The short answer, from health writer Jeannine Stein, is no. The longer answer is that the shaking means you’re working and strengthening your muscles, but it’s
also a sign that the muscle is not accustomed to the demands you’re
putting on it. A still longer answer can be found at the LA Times.