Flexible Economy is a new enhanced Economy service operating on a single cabin aircraft for customers on our shorthaul network flying to and from London Heathrow.
Although caffeine is generally safe and well tolerated, it can cause side effects when ingested in large doses. Additionally, regular caffeine use can cause dependency, resulting in withdrawal symptoms when caffeine is not consumed. Headaches can be a symptom of either too much caffeine or too little.
Taper caffeine: One way to know that you may have a caffeine withdrawal headache is if you are waking with a headache and when you drink coffee etc, the headache improves. It is less painful to gradually taper your intake of caffeine over a period of weeks to avoid the withdrawal headache.