All exercise has an element of risk to it. After all, you're pushing your body hard, sometimes to the limit of what it's capable of doing. If you're not careful with the way you work out, you run the risk of some pretty serious injuries.

But do you know which workouts are the most dangerous? Some of the dangerous workouts below might surprise you!

CrossFit

The CrossFit craze is sweeping the nation, with more and more people signing up for local "boxes" to hit the Workout of the Day (WOD). But did you know that CrossFit is widely considered to be THE MOST DANGEROUS workout of all?

The reason that CrossFit is so dangerous to so many is due to the way the exercises are done. Most of the movements are done as quickly as possible, so form is often ignored. A lot of the exercises involve swinging heavy weights, jumping up, "kipping" (jerking while doing pull-ups and other exercises), and movements that are generally harder on your body.

Not only do you run an increased risk of back and muscle injury when doing CrossFit, but you wear out your joints a lot faster even if you have perfect form. Also, many CrossFit trainers have little in the way of training, so they don't know the proper form either. All in all, even if you do CrossFit just right, you're still putting your body at a huge risk.

Yoga

You may think that Yoga is safe, but you'd be amazed by how many Yoga-related injuries there are every year.

Yoga is all about stretching, twisting, and holding poses, all while breathing deeply and getting into a meditative state. Well, not all types of Yoga. Bikram Yoga, also known as Hot Yoga, is done in a room heated well above 105 F. This not only causes you to sweat dangerous quantities--leading to heatstroke--but there's also the risk that you will overstretch your muscles.

When your muscles are very hot, they are much more limber. Many Bikram Yoga newbies overstretch their muscles, pulling them and injuring themselves. With the threat of both dehydration and muscle pulls, Bikram Yoga ranks high on this list.

Mountain Biking

Cycling is a whole lot of fun, and taking it to the mountains can be the way to go. But there is always the risk that you will find yourself in dangerous situations when cycling out in the middle of nowhere. Even if you follow a cycling or jogging path, there's no guarantee that you'll be safe. You're in the wilderness, where many people run into wild animals, smash into rocks, cycle off cliff faces, and get lost with little in the way of food and water. While it's great exercise, it's not a sport to take lightly.

Martial Arts/Boxing

The fact that martial arts is ALL about kicking, punching, wrestling, and essentially injuring another person means that you are highly likely to get injured as well. There are dozens of types of injuries that can occur when practicing martial arts: knee twists, ankle sprains, split lips, broken knuckles, fractured wrists, dislocated shoulders, and strained elbows, to name a few.

While martial arts and boxing are two amazing sports, they're definitely some of the more dangerous!