"The muscular contractions associated with fidgeting are really quite small," he said, "but it appears that they are sufficient" to combat some of the unhealthy consequences of sitting.

If not provided sufficient carbohydrates to be used as the energy source in fueling muscular contractions, the muscle will actually "eat" its glutamine (and therefore its muscle mass), as energy.

Increases Cardiac Output, stronger heart contractions pump more blood, increased stroke volume, thickens left ventricle wall (more muscular), decreases hearts' oxygen requirements.