I found this on the CDC web site while looking for something else and thought of this thread. I'd suggest reading the whole article, it's pretty interesting. Perhaps they'll end up banning people who exercise eventually too...
More than 10,000 people receive treatment in the nation’s emergency departments (ED) each day for injuries sustained in SRE activities. At least one of every five ED visits for an injury results from participation in sports or recreation. In 1999, Americans made an estimated 1.5 million ED visits for injuries sustained while playing basketball, baseball, softball, football, or soccer. Approximately 715,000 sports and recreation injuries occur each year in school settings alone.
For example, in the U.S., anterior cruciate ligament (ACL) knee injuries are usually sports related, and the vast majority occur in active, healthy 15- to 24-year-olds. ACL rupture can be debilitating in the short term, preventing continued physical activity. The cost of ACL reconstruction alone, not including initial evaluation or rehabilitation, is just under $1 billion per year in the U.S.
the link