You may think having flexible hamstrings is a badge of honor for outdoor athletes. And while you’re not exactly wrong, not everyone needs to have Cirque du Soleil-level stretching abilities to succeed ...

In an effort to cope with an inordinate number of hamstring injuries and improve training, the Washington Redskins recently changed procedures after reviewing their strength-and-conditioning program.

Correspondence to Muhammad Ikhwan Zein, Department of Orthopedic Surgery and Sports Medicine, Amsterdam UMC Location AMC, Amsterdam, Noord-Holland, The Netherlands; m.i.zein{at}amsterdamumc.nl ...