Accelerates • Act • Activity • Age • Alcohol • Approximately • Asleep • Average • Characteristic • Characteristics • Common • Control • Cycles • Deep • Digestion • Digestive • Discovered • Dopamine • Duration • During • Each • Effect • Except • Experience • Falling • False • Final • Happens • Hormone • Identified • Increased • Initial • Length • Many • Movements • Muscle • Nightmares • Particularly • Percentage • Phenomenon • Rebound • Repeated • Restoration • Spent • Their • Throughout • True • Vivid • Way • Which