Interesting Food - Coffee

According to scientists from the UK and Germany, using coffee as a pick-me-up may be pointless if you drink it all the time.

(Experts say they have discovered that people who drink a lot of caffeine develop a tolerance to its stimulatory effects. If you drink a lot of coffee, caffeine only brings you back up to baseline or "normal". So, cut back a bit and benefit from a boost if and when you need it.)