If you exercise alone on the couch pressing buttons to control the TV, then maybe it's not your fault but your DNA.

This official, scientifically based justification for every ... lazy claims a new study at McMaster University in Canada published in the journal «Proceedings of the National Academy of Sciences».

The researchers reached to their conclusions after experiments in mice whose muscles were lazy by two genes essential for exercise. They noticed that the mice that had been tampered did not have the same performance in the gym compared with other mice.

The enzyme fitness genes that control specific silencing an enzyme called AMPK (AMP-activated protein kinase) and is activated when physically active.

As explained lead researcher, associate professor of medicine Gregory Steinberg 'mice love to run. After our intervention in the genes of their muscles, while normal mice were able to run for a long time, those who showed a lack of genes was going much smaller distances. Within seconds we were able to know which mice carry the genes AMPK and what not. " Reduction of mitochondrial analysis showed that animals deficient in the AMPK genes showed lower levels of mitochondrial (these are the "factories" power cell). Alongside their muscles had impaired glucose utilization during exercise.

"suppressing AMPK genes discovered to be regulators -" keys "of the mitochondria. When we exercise increases the production of mitochondria in muscle and contrast where we are active, the number of mitochondria decreases adding that lack of exercise which creates a vicious circle. "The number of mitochondria in the muscles falls and this in turn makes it difficult to start exercising."

According to the Professor the findings are important especially in terms of people for whom exercise is difficult, as obese, patients with asthma and those with serious disabilities