Caffeine is part of the daily routine for many, whether it's the morning coffee, the mid-day tea or an energy drink before a night shift.
Its popularity makes a lot of sense, as the NHS point out: "Drinks containing caffeine can temporarily make us feel more alert or less drowsy."
For many it gives a much needed pick up, but for some others it can become more than just a part of the routine; it can become an addiction.
