For years your mom/dad and your friends go to the gym multiple times a week and they have probably been telling you to eat better and exercise more. It’s all you hear on television, in the newspapers and on talk radio. New doctors and dieticians usher in new diets, new fads, and so you’ve made some lifestyle changes – cutting back on your fat and sweets intake, and doing some cardiovascular exercise a few days a week. Despite all this, you still feel burned out, can’t drop those extra pounds, and don’t have the energy to greet each day with enthusiasm. What are you missing?
The third piece of the puzzle: sleep
Though the exact mechanisms of how sleep works, how sleep rejuvenates the body and mind is still mysterious, one thing sleep specialists and scientists do know is that adequate sleep is necessary for healthy functioning. Research shows that all mammals need sleep, and that sleep regulates mood and is related to learning and memory functions. Not only will getting your zzz’s help you perform on a test, learn a new skill or help you stay on task, but it may also be a critical factor in your health, weight and energy level.
Sleep deprivation may also inhibit one’s ability to lose weight – even while exercising and eating well! A 1999 study at the University of Chicago showed that restricting sleep to just 4 hours per night for a week brought healthy young adults to the point that some had the glucose and insulin characteristics of diabetics. Such sleep restriction may have been a bit extreme, but it is also not altogether uncommon in our society and is a pattern deemed the “royal route to obesity” by Eve Van Cauter, PhD, who conducted the Chicago study.
Food is also related to sleep by appetite and metabolism. Research by Dr. Van Cauter shows that people who don’t get enough sleep are more likely to have bigger appetites due to the fact that their leptin levels (leptin is an appetite regulating hormone) fall, promoting appetite increase. This link between appetite and sleep provides further evidence that sleep and obesity are linked. To top it off, the psychological manifestations of fatigue, sleep and hunger are similar. Thus, when you’re feeling sleepy you might feel like you need to head for the fridge instead of bed.
What it all means: how diet, sleep and exercise affect you
By now you probably realize that health is complex – if one part of the body system suffers, you’re likely to see consequences in other areas of your life. Though diet and exercise are critical components of healthy lifestyles, it’s also important to remember that sleep is inherently linked with how we eat (and how much), how we exercise (and whether or not we lose weight), and how we function on a daily basis. Getting the proper amount of sleep each night is necessary to face the world with your best foot forward. Sleep will help you on the road to good fitness, good eating and good health!
All men whilst they are awake are in one common world: but each of them, when he is asleep, is in a world of his own. ~Plutarch
