This soleus muscle may get less glory than the gastrocnemius—but it’s actually way more powerful. Here’s how to strengthen it ...

WATCH the haunting moment the world’s first humanoid robot Protoclone – complete with muscles and bones – twitches and spasms ...

Transform your legs with 10 equipment-free exercises that build strength, improve muscle tone, and enhance overall fitness ...

Running along the basketball court or swimming across the pool, when, all of a sudden, we experience a sharp pain in our foot or leg ... A muscle spasm, also known as a cramp, twitch or charley ...