ABC News€™ Vanessa Weber reports:

CrossFit is one of the most extreme workouts on the market, but one physical therapist is raising questions about the exercise program that has an almost cult-like following.

Eric Robertson, an assistant professor of physical therapy at Regis University in Denver, wrote an article this week highlighting rhabdomyolysis, a potentially fatal condition that can be caused by several factors, including severe exertion. Skeletal muscle is damaged, rapidly releasing proteins into the blood. It results in harm to the kidneys and can lead to kidney failure. In his article, titled €œCrossFit™s Dirty Little Secret,€ Robertson wrote: €œRhabdomyolysis isn'€™t a common condition, yet it i€™s so commonly encountered in CrossFit that they have a cartoon about it, nonchalantly casting humor on something that should never happen.

Shoulder pain and rotator cuff injuries can be very painful, debilitating and can take a long time to heal if you do not initiate a good program early. This can have a negative on your daily life, in particular if your dominant arm is the affected arm. A very common injury in sports like Tennis, Baseball and various sports requiring a throwing action. Focus for this type of injury is typically about the shoulder, but I have found from over 15 years as a trainer specializing in rehabilitation and sports is that there is a lot more to the problem than meets the eye. I have found that poor posture, lack of movement skill and leg strength, mainly the lunge movement, coupled with poor rotation and twisting, is where the real problems lie. In this article, I am going to show you our 6 step process for identifying the cause and then how you go about using stretches, mobilizations and exercises to get rid of pain and restore function to the shoulder. But most importantly, you will learn how you can prevent it from coming back.

When the cold months start to draw near the dedicated skiers and snowboarders are rubbing their hands together with glee as they start planning their trips to the snow. And each year I also get anxious about seeing clients turn up at my door after they had blown out their ACL, or suffered some horrific back injury from a skiing or snowboard accident. Sometimes it is not even from an accident but from wear and tear over the snow season that has now left them in a world of pain. Other cases I also see people that need that did not enjoy the trip so much as they fatigued so quickly they had to rest after the first day for they could hardly move! A strength training program should not be considered a luxury for people undertaking this sport. It is a necessity! Unfortunately some think that doing some leg presses, leg extensions and a handful of bridges is enough to get you there. Some think their twice a week Yoga or Pilates will do the job, which may help in a small way but not even close for what you really need. Unfortunately it is not a sport you can go out to the local park and practice either. You can only practice when you are there. This is why you MUST use the gym to prepare for the dangers of not doing this are very high.