Body mass index = weight (kg) divided by height (m) square kg/m2.

Normal weight: body mass index = 18-25.

Overweight: body mass index = 25-30.

Mild obesity: body mass index >; 30

Moderate obesity: body mass index >; 35

Severe obesity: body mass index >; 40

First of all, we should change our daily habits and reduce the intake of sweets and drinks in our diet, which are high in calories.

Eat more vegetarian and meat dishes, but only one meal is allowed.

Then do more exercise, aerobic exercise is the best (running, skipping, hula hoop, yoga, dancing)

Persistence can make you thin. Become a habit and you won't feel tired.