We all know that having a good night's sleep is good for us, but in what way? How do we benefit from having a solid eight hours sleep a night? Below we share with you 5 major benefits of a really good night's sleep. 1. Better able to control your weight It has been proven that getting at least eight hours of sleep a night can help control weight. Those who sleep seven or hours less are known to have trouble maintaining a healthy weight. This is because when you feel rested, you have more energy and can be more active. You will also have the correct amount of the hormone, lepin, in your system. This is responsible for appetite suppression. 2. Improved memory and clarity of thinking Having a solid eight hours' sleep a night is good for your memory and clear thinking. The brain is better able to take on new ideas, facts and figures, and can process them much quicker. You will also see the world more clearly, without that fuzziness of tiredness. 3. You feel less pain If you suffer from chronic pain, then getting a good night's sleep can help alleviate that pain. It is believed that sleep can act as a natural analgesic, and can lower the pain threshold, making the sufferer better able to cope with their painful condition. 4. Stronger immune system The jury is still out on this one. But it is widely believed by researchers that getting a good night's sleep can have a positive effect upon your immune system. Early trials have found that people who have a restful sleep, of eight hours or more, are less likely to develop the common cold. 5. You feel happier It is true, that getting a solid eight hours of asleep a night can make you feel happier. You will be in a much better and amenable mood and will be able to see the lighter side of life. This is because you will feel rested, have increased energy levels and your metal health will be so much better for it.