Because children are intermittently active (they do not naturally engage in continuous activities, such as jogging), we need to make sure that they have multiple periods of moderate activity that are at least 10 to 15 minutes in duration each day (Corbin & Pangrazi, 1998).
Buff is the pale yellow-brown colour of the un-dyed leather of several animals.As an RYB quaternary colour, it is the darker colour produced by an equal mix of the tertiary colours citron and russet.uff is the traditional colour of the U.S. Army Quartermaster Corps. The U.S. Army Institute of Heraldry specifies a buff tincture for certain coats of arms.
The color term comes from the hue of buffalo hides (later ox hides). Association of hide and skin led c.1600 to in the buff. Buff-colored uniforms of New York City volunteer firefighters since 1820s led to meaning enthusiast (1903).The Buffs are men and boys whose love of fires, fire-fighting and firemen is a predominant characteristic.