You have a major hunger hormone and satiety hormone, called ghrelin and leptin, respectively. They tell you when you are hungry and when you are full... but they do one other important thing: modulate your metabolic rate.
If you don't want your waistline to expand over the years, you better work on making time for sleep at the end of every day, no matter how busy you are.
Leptin is by far the most important hormone in regulating appetite and metabolism. Leptin is a hormone that's produced by your adipose tissue, or fat stores; it's a long-term regulator of food intake, and the key to satiety
Many of us suffer from "hurry disease." The medical term for this is "time urgency impatience", or TUI. Studies have shown that it increases your risk of high blood pressure, heart attacks, other physical problems, and even traffic accidents. Learn some tips to slow down.