Because you lose water weight. A lot of fat is actually water retention due to things like eating sodium. The sodium holds water in your body. Sweating temporarily removes the water. But you are better off just cutting down your sodium for a more permanent result.Linkles was talking about wearing it as a young teen though when her bones were growing. The construction could affect bone structure if done then as the bones are more malleable.
Also I'm confused on why it would be good to sweat more?
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