Medical X-Press – Staff Writer
High-intensity interval training (HIIT) alternates short phases of intense physical exercise with recovery periods. “The more intense the exercise, the greater the effects seem to be, even in children,” says Dr. Sascha Ketelhut from the Institute of Sports Science at MLU. It is not about how long you exercise, but rather about how intensively you exercise within a short period of time. “Interestingly, this form of intermittent exercise is precisely how children move naturally,” says Ketelhut. Children do not have a natural propensity to go jogging for long distances. Instead, constantly alternating between intensive periods of exertion and short phases of recovery, like in games such as tag, is more in keeping with how children naturally move and play.
https://medicalxpress.com/news/2020-02-short-intensive-children-health.html