Everything’s better on ice— treadmill workouts included. At Athletic Republic training centers, patented skating ‘mills can hit 16 mph and reach up to 32 percent elevation. And if state-of-the-art ice hockey training isn’t your thing, simply hop on the Generation II Super Treadmill. Raised and lowered hydraulically, these tricked-out treadmills are designed to help athletes improve their speed (28 mph sprints or 40 percent incline hills, anyone?) while reducing force at the knee upon foot strike.