Now, formula to snooze off according to how tired you are

Islamabad: Scientists claim that they have come up with a formula for those who agonise over how to get a better night's sleep.

Researchers have come up with the formula by considering a person's tiredness, bedtime , mattress comfort, their number of waking hours, noise, light, heat, and duvet thickness, the Daily Times reported.

The formula scores the person's sleep quality from "great" to "tossing and turning all night".

The formula, developed by the University of Manchester in association with The Fine Bedding Company is - sleep quality = [(T x Bt) + C ] / [ Ha + S + L + (H x D)]

A score of two is a great night's sleep, one is average and zero is tossing and turning all night.