What's more, they benefited from the caffeine boost — the supplement contained about 400 milligrams of the stuff — no matter how much caffeine they got from their daily coffee habit. (health.com)
If you go back to the 1970s, people with a serious coffee habit often had an accompanying habit: smoking. (npr.org)
This post contains affiliate links that provide extra money for our mutual coffee habits addictions. (mightymoms.club)