You’ve heard of a self-fulfilling prophecy? If you keep focusing on things you can’t do, like resisting junk food or getting out the door for a daily walk, chances are you won’t do them. Instead (whether you believe it or not) repeat positive thoughts to yourself. “I can lose weight.” “I will get out for my walk today.” “I know I can resist the pastry cart after dinner.” Repeat these phrases and before too long, they will become true for you.
Falling short on zzz’s is also a surefire way to put your waistline in jeopardy. That’s because sleep deprivation knocks your hunger hormones out of whack, leading to an increase in ghrelin, which stimulates appetite, and a decrease in leptin, which signals when you are satiated. What’s more, research has shown that when you aren’t well-rested, you’re also more likely to reach for junk food (hello Ben & Jerry’s!)—and it may even become harder for you to build muscle mass.
"When we’re lacking in sleep, our body’s hormones get thrown off balance which can impact our hunger levels the next day. We all have two hormones that affect our appetite: ghrelin and leptin. When we don’t get enough sleep, our ghrelin levels (the hormone that makes us feel hungry) rise, and our leptin levels (the hormone that makes us feel full) drop. This means that when we’re awake, we tend to eat more but feel less satisfied. Try going to bed a little earlier than usual to avoid this imbalance and remember to remove any distractions that might prevent you from nodding off."