Dr. Sophia Yen, co-founder of Pandia Health and professor at Stanford Univeristy with a clinical focus on obesity, agrees that abdominal sweatbands don't really work — at least not long term. "I think it would work temporarily, but it wouldn't work long term," Yen says. "Anytime anything's about sweat, it's temporary."

Does sweat Belt reduce belly fat?

Unfortunately, these sauna belts don't reduce belly fat. The theory of these sweat belts is that if you heat up your body you'll burn more fat, especially if you're exercising while wearing them, as most of these products advise.

Does abdominal belt reduce tummy?

When used regularly, an abdominal belt can help tone the belly muscles after delivery and help reduce unwanted fat and tighten loose muscles.