Caffeine can help you feel more alert, but it is worth considering how it fits with your sleep routine. There is no single drink, snack or meal pattern that guarantees good sleep for everyone.
This guide is for adults. Persistent tiredness or difficulty sleeping should not be treated as a furniture-shopping problem.
Review caffeine near bedtime
The NHS insomnia guidance advises avoiding tea and coffee for at least six hours before bed. Consider other caffeinated drinks in your routine too, including energy drinks.
The effect and timing vary between people. A fixed claim that everyone gets the same effect for exactly 12 hours is not a useful rule for choosing a routine.

Check what is in the drink
Read product information and consider portion size as well as the drink’s name. To understand a pattern, note what you have and when, alongside bedtime and how you feel. An old comparison between particular café drinks should not be assumed to describe every product sold today.
Avoid guarantees about food and sleep
A food should not be advertised as certain to leave sleep unaffected. Individual needs and health conditions vary, so a general bedroom article is not a substitute for dietary advice tailored to you.

Look at the wider routine
The NHS guidance on tiredness discusses regular meals and healthy habits alongside sleep. Use that guidance rather than a list of supposedly guaranteed sleep-friendly snacks.
Seek help for persistent problems
The NHS advises speaking to a GP when insomnia has lasted for months or makes daily life difficult. Its insomnia guidance explains the symptoms and advice.
Keep the bedroom comfortable and usable, but do not assume a new bed or mattress will address an underlying sleep or health problem.
Plan a comfortable bedroom
If you are furnishing your room, compare the dimensions, mattress fit and practical layout of the current bed range. You can visit the showroom to discuss furniture and finishes.