A new study from the National Institutes of Health suggests there is a powerful effect to believing that you had a restful and full night's sleep. In other words, just telling yourself you had a good night of sleep could help you, even if it isn't actually true.
The study of more than 160 people told one group they had above average sleep and the other group was told they had below average sleep, regardless of how the study participants actually slept the night before.
The group that thought they were better rested scored higher on simple addition tests, while the group that believed they had a rough night didn't score so well.
Researchers concluded there is a powerful placebo effect allowing people who think they are better rested to perform as if they really area, allowing your mindset to set you up to better tackle the day.
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