Don't eat liquid food before swimming, such as cereal, chocolate, snickers, etc. After swimming, you need to drink some water and a big cup. Don't forget to do warm-up exercises before swimming. You swim about four times a week. Swimming at night is the best and fat consumption is the fastest. It takes at least 20 to 35 minutes each time. This is what my postpartum class teacher told us. . She has a good figure after giving birth to her second child and hopes to adopt it. It's all handwritten. It's very tiring.