What does it mean when your calf muscle suddenly cramps in the middle of the night?
1. Introduction When your calf muscle suddenly cramps in the middle of the night, you are experiencing a nocturnal leg cramp, an involuntary, sustained, and highly painful contraction of the gastrocnemius or soleus muscles. This sudden physiological event jerks individuals out of deep sleep, leaving the affected muscle feeling like a rigid knot of wood. … Read more