Ryan, left, and Sean Penny, also called the Wellness Brothers, have co-authored the fitness book No Sweat. To keep fit, they advocate short bursts of movement throughout the day. Jeffrey E Biteng / The National
Ryan, left, and Sean Penny, also called the Wellness Brothers, have co-authored the fitness book No Sweat. To keep fit, they advocate short bursts of movement throughout the day. Jeffrey E Biteng / ThShow more

The 'no sweat' way to keeping fit