You don't often hear anyone talking about how hard they hit their hamstrings at the gym. Leaving them out of your workout, though, is a big mistake, because they help you perform so many daily ...

The semitendinosus is one of the four muscles in the hamstring muscle group. The others are the semimembranosus and the biceps femoris. The semitendinosus is the longest of these muscles, and it runs ...

You’ll know the feeling if you have tight hamstrings – your strides feel shorter, it seems like you’re working harder than usual and your legs feel stiff and restricted. Going faster or tackling ...

Whether you're moving your knees or your hips, the hamstrings are essential. Regularly put to work (whether running, walking or jumping) during and after sports sessions, taking the time to stretch ...

The three powerful muscles running down the back of your thigh are the semitendinosus, semimembranosus, and the bicep femoris. Together, these muscles are known as your hamstrings. The hamstring is ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Are your hamstrings ...