This is our German Shorthaired Pointer, Fritz. He is 2 years old and is the perfect dog for us. Fritz is loyal, obedient, respectful and active! The high point of Fritz's day is the long run we take every afternoon.
Scientists say they may have found the reason why we need to sleep. Photograph: Corbis Scientists in the US claim to have a new explanation for why we sleep: in the hours spent slumbering, a rubbish disposal service swings into action that cleans up waste in the brain. Through a series of experiments on mice, the researchers showed that during sleep, cerebral spinal fluid is pumped around the brain, and flushes out waste products like a biological dishwasher.
To understand why sleep is important, think of your body like a factory that performs a number of vital functions. As you drift off to sleep, your body begins its night-shift work: 1  Healing damaged cells. 2  Boosting your immune system.  Recovering from the dayâs activities.