The short answer: between two and five days
Cardiovascular Health High doses of caffeine can lead to increased heart rate and elevated blood pressure, especially in individuals sensitive to its effects
You can use it to freshen up your cabin while you drive
Person-to-person infections When travelling, you can reduce your risk of getting or spreading respiratory infections, like the flu or COVID-19, by: staying at your accommodation and limiting contact with others if youre sick wearing a well-fitting mask, especially: if youre sick and need to be around others when youre at large indoor events or in crowded settings, like sporting events, concerts, and airports cleaning your hands regularly with soap and water for at least 20 seconds, or using hand sanitizer containing at least 60% alcohol covering your coughs and sneezes with a tissue or your elbow, not your hands Mass gatherings (large-scale events) Clean your hands to help reduce the spread of infectious diseases Respiratory infectious diseases: How to reduce the spread with personal protective measures To lower your risk of getting sexually transmissible infections (STIs), HIV, and mpox, you can: get vaccinated against mpox if youre eligible practise safer sex methods use barrier protection during sexual activity, like condoms and dental dams
