You want to make gains in the room? Grind. You want to make those gains great? Go with the Nike Reax 8. With super responsive foam fueling every rep, you can go from the rack to the cardio room or wherever you need to put work in. Time to get to it. Flexibility - Moderate - A flexible forefoot bends and dips when planking, executing lunges and other exercises. Stability - Moderate - A robust traction pattern gives you great grip while a bulky midsole offers support when going after heavy lifts.