If you're having trouble sleeping, your diet could be to blame, particularly if it includes a common snack that contains caffeine. Caffeine is a stimulant found in coffee, tea, and energy drinks ...

including factors influencing caffeine content, and gives a general guideline on daily caffeine limits. Related: Is Coffee ...

This is matcha. Matcha contains the nutrients from the entire tea leaf and contains more caffeine and antioxidants than are typically present in green tea. Studies of matcha and its components ...

Chocolate is made from cocoa beans, often referred to as cocoa solids, the seeds from cocoa trees that naturally contain caffeine. To make the chocolate we know and love, cocoa beans are fermented ...