来自MSN5 个月
This viral ab exercise looks like a hoax, but experts say it's actually effective
The “stomach vacuum” isn’t a plastic surgery trend ... lake or pool in order to contract the abdominal muscles. Hold your breath for 10 to 15 seconds, then release. Repeat for five sets ...
How to Do the 'Stomach Vacuum' Exercise to Strengthen Your Core
There are many workouts you can do to boost your core strength, including something called the "stomach vacuum" exercise ...