By James Hamblin
Swimmer Michael Phelps is the most prominent athlete to appear with circular bruises over his body this week, raising eyebrows and questions.
Is he okay? Is he a closet hemophiliac? Is he—oh no—he’s not smoking pot again?
Olympians are now allowed a modest amount of THC in blood tests, so he might be. But that would only tangentially explain the bruises, which are self-inflicted, the result of a practice known as cupping.
Continue reading by clicking the name of the source below.