Performing A Vacuum
In performing a vacuum (activating the transverse abdominis), one draws one's bellybutton inward, toward the spine. Some perform a vacuum in conjunction with bending over, reaching overhead, or when lifting heavy weights, although the benefit and healthiness of this is disputed (some advocated just tensing the midsection, with primary focus more so on the lower back). Increasing the range of motion (how far it is drawn in), the intensity (very little can be done, other than resisting gravity) or the duration are the methods of making the muscles stronger. Performing flutters or tabatta intervals of high intensity and rest similar to kegel exercises is also common. It may also be possible to vary the pressures by contorting the body or exerting various pressures on tissues connected to the transversus abdominis, although how this might be done is currently unknown.
Read more about this topic: Vacuum Exercise
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