Dehydration affects our energy levels and focus, so aim to stay hydrated during the day - keep a bottle of water nearby as a visual reminder. Try to have your last cup of tea or coffee at midday, and aim for your drinks after midday to be caffeine-free.
Tea and coffee contain caffeine, which is stimulant, so it will initially make you feel alert and provide a short burst of energy. However, it takes the body around 12 hours to completely process the caffeine from your body from just one cup of coffee. So if you have a coffee at midday, you'll still have half the amount of caffeine in your system at 6pm and a quarter at 9pm. This residual caffeine in your system can interfere with sleep - you may find it harder to get to sleep and stay asleep and you may wake up feeling sluggish.
This starts a cycle where you may reach for more caffeinated drinks during the day to boost energy levels which then further affects sleep, leading to lower energy levels.
Originally post by Coles Magazine, Autumn 2023.