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.
Hangover headache âistockphoto. âThe cause of these headaches is not entirely clear,ââ Loder said. âThe pain may come from inflammation or the effects of alcohol on blood vessels, but the specific cause is not very clear. Dehydration may also play a role in these headaches, while behaviors such as staying up later than usual or a lack of caffeine add to the circumstances triggering this headache.ââ.