Drinking green tea with L-theanine can cause calm alertness because the caffeine in the tea wakes you up, while L-theanine promotes relaxation.

Choose caffeine-free teas to unwind and promote overall health thanks to their antioxidants and soothing properties.

Maggie Moon, MS, RD, is a culinary school-trained dietitian and award-winning brain health nutrition specialist. She is the bestselling author of The MIND Diet: A Scientific Approach to Enhancing ...