It's like cardio for your tummy, using the vacuuming technique. In this case, you inhale and exhale rapidly, sucking in your stomach. This pose will help you warm up your transverse muscles, so that you feel less pain when you hold that position.

What is the point of doing vacuums?

The vacuum works the transverse abdominis, the layer of muscle behind that six-pack you're hiding. As you build this muscle, you'll be gaining more postural support. In addition, you're newly added strength will assist in 'pulling in' your internal organs and giving you a slimmer waistline and more abdominal control.

How long do you do stomach vacuum?

As with any exercise, you'll want to progress over time. Work up to holding the vacuum for 60 seconds each set. Don't let your inability to hold your breath keep you from doing these longer sets - take small breaths as needed. Start with three sets and, over time, work up to five sets for serious results.