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.
If you suddenly stop drinking caffeine, you get withdrawal symptoms, such as headache, fatigue, and bad mood. Malocclusion is misalignment of the teeth such as underbites, overbites, and crossbites. Hyperthyroidism causes weight loss, shakiness, tiredness, sensitivity to heat, insomnia, and more.