Time to pump up those leg guns. The Spinervals Big Gear Strength training video helps you focus on low-cadence, high intensity work outs that will give your legs the power to weight ratio of a Saturn V rocket. It's a surefire way to increase your power and speed output through some serious, one-hour workouts.
Use it with a trainer, rollers, spin bike or stationary exercise bike
9.3 difficulty rating makes sure you'll be sweating buckets by the end