Have wheels, will travel -- and likely get injured, if NEISS data is any indication.
Bicycle riding sends more people to the ER than any other sport or activity, 2.3 times more than ATV riding [source: NEISS].
The popularity of cycling, from training wheels to extreme mountain biking, lends itself to the higher number of injuries and a chart-topping 541,746 ER trips. But there's one more factor that makes cycling more dangerous than any other sport: other vehicles.
Those who cycle off-road have 40 percent less chance of getting injured [source: Thompson]. When your mom told you not to play in the street, it looks like she had a point.
But for cyclists who do frequent the paved roads of America, the National Highway Traffic Safety Administration has some tips. Cyclists should follow the rules of the road, it suggests, and enthusiasts should avoid riding at night [source: NHTSA].
So there you have it, the five most dangerous recreational sports in the U.S. If you're going to play, play it safe: "We should take reasonable steps to eliminate avoidable and excessive risk in sports, but we shouldn't live in fear," said Johnson. "Being sedentary is also hazardous to your health."