Objective: We have previously shown that chronic sleep restriction impaired spatial leaming and memory ability in adolescent rats.Drinks likes green tea, coke, red bull are widely drunk by children.All these drinks contain caffeine, an adenosine A1 and A2A receptors antagonist.Whether does caffeine prevent the deficits induced by chronic partial sleep deprivation (SD) and whether does caffeine have some negative impact on the reproductive system of the juvenile male rats?