The hashtag #stomachvacuum has more than 100 million views on TikTok, but what exactly is the “stomach vacuum” meant to do? Are there safety risks that come with it? Does it actually work?

There are many workouts you can do to boost your core strength, including something called the "stomach vacuum" exercise.

Stretch marks affect millions of people, appearing most commonly on the stomach during pregnancy, growth spurts, or significant weight changes. While these skin changes are natural and harmless ...