DAREBEE Workout: What it Works
Ease-Out is a deceptive looking workout. It won't get you out of breath and unless it's a hot day you may not even sweat very much. But it does target tendons and those tiny supporting muscle groups that make bigger muscle groups work better which means that the day after you do it you will feel the difference and yeah it may even hurt a bit too. 
Extra Credit: Keep the leg up off the floor during leg raises.