there's an app, caffeine zone, that helps you find out the right time. I don't know if it based (or been updated based ) on this study. http://frankritter.com

there's an app, caffeine zone, that helps you find out the right time. I don't know if it based (or been updated based ) on this study. http://frankritter.com/caffeinezone/ http://frankritter.com/caffeinezone/