When Beth first started assigning Lifehacker fitness challenges to the writers at the site, I pretended I did not notice. I have never been good at exercising. I struggle to even spell the word. With ...

Genu valgum, sometimes known as “knock knees,” is a misalignment of the legs and knees. The knee joint is shaped or pulled in a way that causes the legs to bow inwards. When someone with genu valgum ...