Let's prove it:
This discovery was made on the basis of a 7-year study of more than 460,000 people aged 40-69. In subjects who slept less than 6 hours a day, the risk of a heart attack increased by 20%, and in those participants in the experiment who regularly fell asleep for 9 hours or more, this risk increased by as much as 34%. A group of people who are genetically prone to diseases of the cardiovascular system, devoted time to sleep and achieved success: the likelihood of heart problems decreased by 18%.
In general, the more a person deviates from the optimal sleep pattern, the more he exposes himself to the risk of heart failure, and this factor is very strong. Conclusions: healthy sleep is as important for the body as training and nutrition.