Recommended: Always cap your lunch with a caffé!

This is fast moving field of research. In December 2009, an article reported that people drinking three to four cups of coffee or tea day had a 25 percent lower risk for Type 2 diabetes. Now a new study shows, that for optimal results, it is best to combine lunch with black coffee. It lowered the risk of Type 2 diabetes by one third (in a study that involved nearly 70,000 women).

Of course, it also keeps you awake the rest of the day!