Why swim when you can bike underwater? French Company Seabike has developed a swimming device that uses muscle-power to propel swimmers through water at superhuman speeds. The device features an adjustable pole that can be customized to the swimmer’s leg length, ensuring a perfect fit. It is strapped around the waist with a belt, which keeps it secure to the body during use. Once swimmers are in the water, they simply find the pedals with their feet, and they’re pushed forward at impressive spee

61K views · 569 reactions | What do you get when you mix a puzzle with freezing cold waters? A seriously tough challenge  TOMORROW on a brand new episode, starting at 9/8c on MTV  | The Challenge | Facebook