Any method can be effective, mainly insisting on exercising for half an hour to lose weight.
Step on the treadmill with your left or right leg first, and then step on the other leg. With the "step rhythm" of the treadmill, your arms can twist with your waist like running posture, rotate left and right, and go back and forth up and down to realize the function of whole body movement.
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You can use a powerful stretcher to train your shoulders, back muscles or arms to make your upper body fit better.