A lot of people seek out experiences that push the limits — think skydiving, BASE jumping and parkour. But some choose even edgier extremes.

Paige Pfleger (@PaigePfleger) from WHYY's The Pulse reports on a practice that might look scary, but those who do it say it releases a lot of bottled-up emotions. And a warning — this story might make some people a little squeamish.