A recent Harvard Medical School study found that it's not that easy to catch up on sleep. Trying to overcome sleep deprivation by getting extra sleep the following night may seem like the right thing to do, but this study found that it isn’t always effective.

The study used a range of tests to investigate alertness and sleepiness after five nights of sleep deprivation and a single night to “recover sleep”. When the length of the "recovery" time was increased, up to the maximum of 10 hours, participants showed the greatest improvement on tasks to determine mental functioning. However, their mental performance failed to reach levels demonstrated prior to the sleep deprivation.

If your sleep is really troubling you, and you’ve had the problem for more than 3 months, take our free assessment to find out if you have insomnia.