Let’s assume you are one of the 85 percent of Americans who consume caffeine every day. Once you’ve armed yourself with some basic facts, it isn’t difficult to make sure that your daily buzz is part of a balanced diet. Too much of anything can be harmful. But research has shown that the moderate intake of caffeine can improve mental performance, including long-term cognitive and memory skills, and can help maximize physical performance. The key is to find out what “balance” and “moderation” mean for you. See more at: http://www.foodinsight.org/caffeine-amount-safe