The number of hourglasses has resurfaced in recent years. More and more people are searching for the word on Google, and celebrity help curves like Kardashian, Jennifer Lopez, and Beyonce have become the focus of attention.

Some celebrities say they have gotten the help of these curves, “waist coach”, tights that shape the body to the waist. If you have seen instagam, you may have already seen them – the first five tags related to waist training have been used for more than 1 million posts.

Insider technology requires doctors and certified personal trainers and nutritionists to weigh the trend of social media. Short answer? This is a scam and there is no evidence that waist trainer for workout coaches actually help users lose weight or reshape the body.

According to the fashion website, the first frame can be traced back to the late 16th or early 17th century. Since then, the original design has undergone considerable changes, but it has also been accompanied by adverse health effects at the waist.

Shortness of breath, nausea, syncope and bruising are just some of the most common side effects. Gastroenterologist Dr. Gina Sam, director of the Gastrointestinal Movement Center at Mount Sinai Hospital in New York, said that if it is a waist trainer for workout, or the waist coach is too tight.

All that, and it may not even provide the va-va-voom end results that the company claims the product can achieve.