New research has confirmed that sleep disturbances are initially associated with depressive symptoms and pain but not disability. Over time, however, poor sleep was found to increase depressive symptoms and disability but not pain.
The cells that control our rhythms of sleep and wakefulness may have first evolved in the ocean - hundreds of millions of years ago - in response to pressure to move away from the Sun, a new study has found.
Most of us love napping during the day, but one needs to understand the pros and cons of it. While napping has many health benefits, resting at the wrong time or for too long time can have negative effects.