Kevin-Prince Boateng is a standout midfielder for soccer powerhouse AC Milan of the Italian league. The club recently announced that he is on the injury list once again, this time for at least a month due to a "muscular" problem. The club's press release added that he has a muscular lesion in his left thigh. 

His girlfriend Melissa Satta says she knows the reason.

The 25-year-old model told Vanity Fair:  "The reason why he is always injured is because we have sex 7 to 10 times each week".

Check out her photo and then you can decide.