Everyone knows yoga is a great exercise for strength and flexibility but one man found out what happens when you attempt a pose that you aren't flexible enough for. Hint: It's painful.

Yoga has grown in popularity over the past few decades with more people using the exercise for strength, flexibility and mediation purposes. The activity has also become more popular with men who find yoga a welcome new challenge. One man found out how challenging yoga could be when he attempted a new pose and injured himself.

A 38-year-old man began practicing yoga two years ago and became an avid fan of the exercise. Since the man began practicing yoga, he began practicing more increasingly difficult poses and styles of yoga, particularly Mysore-style Ashtanga yoga. For the last two months, he would practicing various yoga stances for an hour a day every morning.

After two months of practicing various poses, the man decided to try out a pose he hadn't done before; the Marichyasana posture B.

Here is a description of the pose, according to a BMJ case report, "(The stance) involved flexing the hip and knee into the opposite inguinal crease." The man was attempting the pose unassisted and unsupervised, when he heard a loud crack in his leg, followed by immense pain. He was unable to put any weight on the leg and couldn't get up, so he called an ambulance to take him to the hospital.

At the hospital, doctors noticed that his leg was shorter than normal and had also rotated when he injured it. X-rays showed that the femoral shaft had fractured, which is the longest, strongest and heaviest bone in your body. Most fractures involving the thigh bone are from high energy forces, like a car accident. The study continued, "to the best of our knowledge, no previous report has documented a femoral shaft fracture secondary to a yoga stance in a healthy individual."

Check out the video above that shows the exact yoga pose the man was attempting when he broke his thigh.