Getting a good night's sleep is about more than simply going to bed early – it's about waking up at the right time too. Using a formula based on the body's natural rhythms, the Sleep Calculator will work out the best time for you to rise or go to sleep.
And that means you can look forward to feeling fresh and alert … every morning.
The Sleep Calculator is brought to you by Hillarys,
a leading online retailer of made-to-measure blinds, shutters & curtains.