Without realizing it, you rely on your triceps to do many things on a regular basis—lifting bags, writing, moving furniture, mowing or raking the lawn, to name a few. But you may not be giving these ...

Medically reviewed by Brigid Dwyer, MD Key Takeaways Clonus causes involuntary, rhythmic muscle contractions when a muscle is stretched.It is often observed in conditions like multiple sclerosis, ...