Energy Drinks in the News – The effects of Alpha-GPC versus caffeine on mood, cognitive function, and performance

Here at GreenEyedGuide.com, my goal is to share the science behind energy drinks and their ingredients. In a study published in the Journal of the International Society of Sports Nutrition, caffeine goes head to head against Alpha-GPC in a battle of jitters and performance metrics. Which do you think is going to win?

This article is Open Access (hurray!) but, because it’s a poster presentation, it’s only two-pages long (aww….). Still, let’s dissect the details, shall we? Read more

How do Caffeine Theanine Interactions Affect Mood and Attention? Caffeine/Energy Drinks in the News

We associate caffeine with being hyper and tea with being calm, so what happens when a person has caffeine and theanine together?  I reviewed a paper by the Department of Psychology at Tufts University in which they gave 36 people caffeine, theanine, or both. These participants had to watch disturbing episodes of Band of Brothers to get them all emotional, then take tests to rate their mood and attention. The results indicate just how well theanine and caffeine play together (or against each other). Read more