The UK claims that up to 10 users a week are being hospitalized because of their Wiis. Dr. Dev Mukerjee of Broomfield Hospital, Essex, claims that there has been a 100% increase of patients with “Wii-itis.” Ailments such as shoulder or wrist inflammation have been reported as well as “Wii-knee” after playing Wii-Fit, which may involve 3 months of treatment to cure. So remember, before you head into heavy gaming mode, do some stretching exercises first.