Hiit is a high-intensity interval training, which can increase the heart rate and burn more calories in a short time. This kind of high-intensity exercise can greatly increase the body's demand for oxygen, resulting in hypoxia, so that the body needs more oxygen during the recovery period, so it achieves a more fat-reducing effect.

High-intensity interval training has two core indicators. One is high intensity, and the other is short interval.

And its two weight-loss principles determine that this kind of exercise is more fat-reducing:

The first is excessive oxygen consumption (EPOC)

In the recovery period after exercise, the body must need a lot of oxygen (EPOC) to adapt to and return to the static state. The energy source of excessive oxygen consumption is mainly fat.

What do you mean? Through high-intensity interval training, our body can keep burning fat for a period of time.

Secondly, it can quickly increase the fat burning hormone.

During HIIT exercise, "norepinephrine", "adrenaline" and "growth hormone" will accumulate rapidly in the body.

When two adenoids and one hormone are mixed together, the consumption of fat is very obvious, and free fatty acids and diglycerides in adipose tissue can be released into the blood quickly. To put it bluntly, it can quickly decompose fat, thus achieving the goal of losing weight quickly.

Although HIIT is good, don't be too greedy. This kind of exercise is actually very tiring. We have to do it step by step. Don't do many groups at once. At the beginning, you can do a few fewer groups with a longer interval, gradually increase the number of times and reduce the interval.