My brother is an athlete and he heard from his workout buddies that prickly pear is really good for recovering muscle. And it apparently also helps ease the digestive process, reduces fat storage and helps speed up metabolism as well. He's now made it a habit to have prickly pear after his workouts.
He says that he really feels a difference since he's started doing this. Something about not being as sore post-workouts as he used to be. I don't know but I do hope that it really helps. Because the fruit is not very cheap and is difficult to find. Thankfully we have an Asian grocery store nearby that imports it.