Jet skiing at the top of Niagara Falls wasn't your best idea. You’re already beginning to lose feeling in your body. The Niagara River rarely gets much above freezing, so hypothermia could be setting in. But that’s not your biggest problem, since you're near Horseshoe Falls, with its 57 m (188 ft) drop. The water rushes over the edge of the Falls at 109 km/h (68 mph).And it's taking you with it. Can you survive falling into Niagara Falls?