Keeping the body Loose

Oxygen plays an important role in cleaning out toxins and burning fat in the body.
If your schedule allows it, think about putting in light activity or light workouts throughout the day rather than in one large block.  This is especially a good strategy for those wanting to become more active or those looking to lose weight. 

Keeping the body supple throughout the day will ensure your muscles don't become stiff and will ensure that adequate oxygen circulates throughout the body, important for burning fat and cleaning out toxins in the blood and tissues. 

If you take the example of an Office worker sitting at a desk for hours on end, physiologically and more often than not, their posture suffers, the muscles throughout the body become 'tight', and breathing and oxygen distribution becomes minimal, thus causing even MORE tightness.  It's a vicious cycle but can be minimized even in the above example by moving the body, doing light stretching throughout the day, taking a walk during one's break etc.