Ab vacuums

 I started doing ab vacuums when I was in the states taught to me by my personal trainer and although doing these does not increase fat burning, it CAN help to flatten your stomach by strengthening your deeper transversus abdominis muscles and hence "pulling in" lazy stomach (aka beer belly or "pooch belly").

I did them while I was driving to and from work as I had a 30-45 minute drive but since moving here to the Philippines (haven't driven since I moved here), I now do them in the jeepney or tricycle, it's like the same thing right? I also do them while on the computer (I'm doing it now as a matter of fact while I'm typing this)!

Ab vacuums are simple:

You can do ab vacuums pretty much anywhere, at any time.
You can do them standing, seated (such as in a car), kneeling in a four-point position, or even lying flat on the floor.

The movement is as simple as pulling your belly button in as far as you can by imagining you're trying to touch your belly button to your spine and holding for 10-20 seconds at a time.

Start by inhaling deeply. Then, as you exhale, start pulling the belly button in towards the spine and hold it there for 10-20 seconds while just taking short breaths. Repeat for several holds.

Get in the habit of doing this at least 4-5 days per week while driving somewhere and you may find that this helps to flatten your stomach more by strengthening the transversus abdominis muscle (the deep abdominal muscles beneath the rectus abdominis) if you previously had a "lazy belly".

Like I said, this exercise doesn't increase fat burning... it only helps to flatten a round stomach that has lazy deep ab muscles.

Hope this helps everyone