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 ...

The squat is the gold standard leg exercise either done with weights, no weights, tubing, and/or weighted balls. The benefits are many—from sports skills improvements to maximize caloric expenditure.

A number of Premier League players – including Arsenal’s Kai Havertz and Chelsea’s Nicolas Jackson (above) – have suffered hamstring injuries in recent weeks. With the help of Matt Konopinski, ...

Unfortunately, hamstring strains are both common and painful. They strike athletes of all sorts – including runners, skaters, and football, soccer, and basketball players. But what is a hamstring? It ...