The first swimmer consumes 700 calories in half an hour.

The second place jumps rope for half an hour and consumes 400 calories.

The third and fourth places are 150 70 90 calories.

So the most suitable is skipping rope.

It is said that the human body can lose weight 1kg for every 7700 calories consumed, so let's do a math problem.

Another is that if you want to lose weight, exercise is essential, but you should control your diet and not overeat.

Hope to adopt! ! ! You can ask! ! !