European settlements in the Caribbean began with Christopher Columbus. Carrying an elaborate feudal commission that made him perpetual governor of all lands discovered and gave him a percentage of all trade conducted, Columbus set sail in September 1492, determined to find a faster, shorter way to China and Japan.
In fact, a 2007 Canadian study found that people who sleep only 5 or 6 hours a night increase their likelihood of being overweight by 69 percent, compared with those who habitually sleep 7 or 8 hours.
Yes, lack of sleep can affect your immune system. Studies show that people who don't get quality sleep or enough sleep are more likely to get sick after being exposed to a virus, such as a common cold virus. Lack of sleep can also affect how fast you recover if you do get sick.During sleep, your immune system releases proteins called cytokines, some of which help promote sleep. Certain cytokines need to increase when you have an infection or inflammation, or when you're under stress.Sleep deprivation may decrease production of these protective cytokines.ong-term lack of sleep also increases your risk of obesity, diabetes, and heart and blood vessel (cardiovascular) disease. How much sleep do you need to bolster your immune system? The optimal amount of sleep for most adults is seven to eight hours of good sleep each night. Teenagers need nine to 10 hours of sleep.