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Although regular exercise is very good for health, extreme training may significantly increase the risk of heart problems. People who regularly engage in high intensity exercise may be at the same level of risks as those who don't exercise at all.

In a study published in the Journal of Applied Physiology, researchers observed a group of men, who had completed a minimum of 100 marathons. They were surprised to see that half of the athletes showed some heart muscle scarring. The same study was observed on animals wherein rats with normal and healthy hearts were taken and they were exposed to strenuous daily exercises similar to stress experienced by serious marathoners for over 10 years. After 10 years, their hearts were examined and found that most of them had developed heart muscle scarring and some structural changes in their hearts similar to human athletes.


No doubt, the intensity of workout is dependent on the age factor too. That is, the same degree of exercise may be moderate intensity for a 30 year old and intense for a 60 year old. Thus age, intensity and duration of the cardiovascular exercises are critical factors to consider for obtaining the maximum benefits from the workout.

Techniques To Avoid Over-Training And Still Enjoy High Intensity Workouts

Below are some tips and tricks to avoid over-training:

  • Get enough rest: Adequate sleep allows recovering from the stress of intense exercise. It’s important to ensure that one gets sound and adequate sleep, especially on your training days. In case you are feeling restless or have trouble sleeping regularly, reconsider your training intensity.
  • Check the frequency of workout: High intensity workouts have its benefits, but doing them too often may pose an issue to one’s health. Any high intensity or high stress workout should be limited to twice or thrice a week especially for those who already have health issues as this extra stress may result in making you sicker.
  • Mix Exercises: Try mixing high intensity workouts with relaxing exercises like yoga and meditation. These intermediate stress reducing exercises will help you recover more quickly from the intense exercise stress.
  • Listen to your body:  High intensity workouts, no doubt, improve your overall health and help you achieve your goals of weight loss or muscle gain quickly but it is always better to listen to your body first and then exercise within your comfort zone. Be your best judge and do not get too influenced by your friends, coaches and other workout mates.
  • Do not skip your carbohydrate diet: Low-carbohydrate diets may seem to be the best option to decrease your body fat, but a combination of high intensity workout and low carbohydrate diet may impact your immune system negatively. So in order to avoid any symptoms of over-training, do not skip your carbohydrates.

The benefits of exercise are unquestionable. Physical activity helps us feel better, keeps our weight in check, represents a simple and very effective therapy for many diseases like insomnia, hormonal imbalances, depression etc. The only important thing is to start slow, listen to your body and do not jump into problems by exerting too much with intention of obtaining the maximum benefits.

If you are an athlete, it is better to reconsider your training pattern and, if feasible, replace long cardio sessions with shorter, high-intensity burst-type exercises.

The future research and studies, no doubt, will focus on how to obtain the maximum benefits obtained by regular exercise while preventing its undesirable effects, similar to the studies on different drugs and therapies.

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  • 65(5):411-419.Photo courtesy of istolethetv via Flickr: www.flickr.com/photos/istolethetv/5064711595
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