History and Usage: Amplitude takes building lean muscle mass in a new direction by augmenting body composition with its pro-anabolic non-hormonal adaptogenic formula. When an internal or external stressor is present, Amplitude helps overcome its imposed demand by amplifying the rate at which the body adapts, returning it to a state of balance faster. This means athletes can experience enhanced performance levels, shortened recovery times, and improved rates of muscle growth when exposed to stressors like resistance training.
Websites for Further Research:

http://www.fitness.gov/

http://www.cdc.gov/nccdphp/dnpa/physical/reco...

http://www.shapeup.org/