A video that is almost too intense to watch shows a number of young daredevils risking their lives at heights that may cause some people to go lightheaded.

Uploaded on YouTube earlier this month, the video features unnamed thrill-seekers climbing on buildings, bridges and dangling hundreds of feet in the air like it’s no big deal.

See if you can get through the entire video without needing a break. The viral compilation has already been viewed more than 300,000 times.

(H/T: Gizmodo)