A new study has shed light on the fact that doing too many HIIT workouts may be dangerous for your mitochondria which is the energy powerhouse of every cell in our body.
High-intensity exercise is good for us but they are not good when practised too often.
According to an admonitory study of molecular effects of High-intensity interval training also called HIIT, people who work out too much every single day develop severe function decline in their mitochondrial as well as blood sugar dysfunction.
People who practice HIIT workouts regularly start to face metabolic issues. Their metabolic rates start to reverse when they reduce the intensity of their workouts. All the benefits that they may have gained from their excessive exercise regime disappear.
Almost everyone by now knows what a high-intensity workout is and how beneficial it can be for our fitness. It consists of repeated periods of brief hard exercises with intervals of rest. HIIT workouts do not take a lot of time but they enhance fitness and other areas of health. Earlier studies have shown that intense exercises increased mitochondria in our cells and more mitochondria was believed to be good for our metabolic and cellular health.
But the recent study indicates that HIIT has some problems that we may not have considered. An article by Gretchen Reynolds showcased that people who performed HIIT exercises thrice a week for six weeks had no improvement in their body fat or blood pressure whereas people who exercised moderately five times a week showcased much more improvement in their body fat and blood pressure.
This indicates that maybe people who performed HIIT exercises were pretty lazy on the other four days of the week and hence were harmed by the intense workouts instead of gaining benefits. When you consider the whole week, they simply did not exercise enough.
There is no indication as to how many times should you do HIIT workouts in a week to gain maximum results that shall be long lasting. Most studies have recommended intense workouts to be performed three times a week but now researchers are studying the effects of HIIT and how it affects health in the long run.
This new study was published in the Cell Metabolism journal and was researched at the Swedish School of Sport and Health Sciences and The Karolinska Institute also in Stockholm. The researchers sampled various amounts of weekly exercises at different difficulty levels to determine which would be the right amount of intensity per week for workouts.
11 men and women were recruited to exercise. They were regular people and not athletes. Their metabolic health and current fitness were monitored along with blood sugar level over a one day period.
The volunteers then started the exercise routine. The first week they were asked to perform two HIIT workouts. The volunteers increased the number of HIIT sessions every week and the researchers continued testing their blood sugar level and muscle health. Then they compared how the bodies changed every week.
This study was a short term study but it suggests that HIIT workouts should be done in small sessions. You should train a few days in the week and not be sedentary other days, even if you go for a walk, you must be active on all days of the week.