Players will need sex test to play on WTA Tour

The Women's Tennis Association is to ask all players to undergo genetic sex testing in order to compete on the WTA Tour.

You’re Not A ‘Morning Lark’ Or A ‘Night Owl’ — Here’s The Test That Reveals Your Real Chronotype, By A Psychologist

Chronotype isn't just morning lark or night owl: your body clock runs on three dials, not one. Take this quick, science-based ...