OCR is a sport in which an athlete competes on foot and must overcome various physical and mental challenges. People jumping, crawling, passing under barbed wires or climbing obstacles in races are ...

"Taking on a mud run and OCR event is a great way to challenge your level of fitness and overall athleticism," says leading online personal trainer Scott Laidler. "It will also tax you mentally as ...

This is a great workout if you have a Marine Corps obstacle course available. If not, an outdoor pull-up bar will suffice, or there are other options listed below. We did this one on a holiday when ...