 If you've ever seen the Michael Phelps image with him in his cupping marks at the Olympics, it became very popularized for post-recovery for athletes. I like to call it like a reverse massage. So instead of pushing the skin and fascia and muscle down, we're pulling it up. And that's creating space inside those layers. And that allows for the muscles to relax once the cups are released. But it also allows more blood flow to get into the area.