Add intensity to your training when you include the ProForm PFAW414 4 Lb. Pair Ankle Weights in your daily workout routine to help you tone and strengthen your gluts, hamstrings and quads. It's easy to incorporate ankle weights into your daily walk, aerobic activities, or step routine. Increase your caloric expenditure and oxygen intake by 5 to 15 percent when you add weights of 1 to 3 pounds. Plus, using weights can also boost your heart rate by 5 to 10 beats per minute. Grab your pedometer and start working up to 10,000 steps a day to take your lifestyle from sedentary to active.