A good rest has always been called beauty sleep—but how about a lean body sleep?
Research shows that individuals who are not sleep deprived have an increased capacity to lose weight and keep it off. Sleep reduces stress hormones, important for fat loss and in maintaining good metabolism.
Sufficient rest and recuperation effectively reduces our stress hormone, cortisol. Cortisol has many functions. It helps the body use sugar (glucose) and fat for energy (metabolism), and it helps the body manage stress. Cortisol levels can be affected by many conditions, such as physical or emotional stress, strenuous activity, infection, or injury. When we are sleep deprived, cortisol levels rise. Cortisol controls our appetite. When cortisol levels are high, it can often make us feel hungry even when we have eaten enough. It also raises blood sugar and insulin levels and results in increased fat deposition around the abdomen. To further complicate the situation, high cortisol can negatively affect our sleep patterns, making it difficult to fall or stay asleep when we finally do go to bed. This increase in stress hormone also has detrimental effects on other aspects of our endocrine system, like thyroid gland function which governs our metabolism.
Normally, cortisol levels are very low at bedtime and at their highest just after waking. This pattern will change if a person works irregular shifts (such as the night shift) and sleeps at different times of the day. Cortisol levels are also affected by pregnancy, physical and emotional stress, illness, hyperthyroidism and obesity. Certain drugs can also increase levels, particularly oral contraceptives (birth control pills), hydrocortisone (the synthetic form of cortisol), and spironolactone. Adults have slightly higher cortisol levels than children do. Hypothyroidism may decrease cortisol levels. Drugs that may decrease levels include some steroid hormones.
Cortisol production regulates your immune system on a 24-hour cycle. This is why many times congestion or your cold or flu symptoms get worse at night. As cortisol levels drop at night, your immune cells become highly active. The immune cells kill large numbers of bacteria and viruses, causing greater mucous production. As a result, you experience more congestion and coughing as your body attempts to get rid of the mucous.
At daybreak, when cortisol levels rise, the activity of the immune cells tapers off. The immune cells then reset and recondition themselves in preparation for the next nightly cycle.
Problems arise when cortisol levels are out of balance-say, when you fly to a different time zone-thereby compromising the cycle of immune function.
While cortisol is an important and helpful part of the body’s response to stress, it’s important that the body’s relaxation response to be activated so the body’s functions can return to normal following a stressful event. Unfortunately, in our current high-stress culture, the body’s stress response is activated so often that the body doesn’t always have a chance to return to normal, resulting in a state of chronic stress.
To keep cortisol levels healthy and under control, you can learn to relax your body with various stress management techniques.
Sleep is a most valuable and restorative resource that is vital to wellbeing and stress management. Unfortunately, stressed and busy people tend to get less sleep than they need. Overthinking and anxiety can make sleep difficult and wake you up at night. Anxiety keeps your mind busy as you imagine threatening scenarios and become preoccupied with finding solutions. That racing of your mind can rob you of sleep by keeping your levels high, making sleep harder to achieve.
Sleeping problems are almost always involved in mental disorders, including depression, schizophrenia, Alzheimer's disease, stroke, as well as head injury. And symptoms are strongly influenced by the amount of sleep a person gets. Difficulties may arise from the drugs used to control symptoms of a disorder, or from changes in the brain regions and neurotransmitters that control sleep.
You can make lifestyle changes in order to keep your body from reacting to stress in the first place. Involve yourself in things such as yoga, writing in a journal, exercise, listening to music, dancing, guided imagery, sex, breathing exercises, gardening, cleaning, building, and creating art. All of these things are proven to be helpful in relaxing the body and mind. Experiment and find something that works for you, then DO IT on a REGULAR BASIS. It could be as simple as just taking a walk around the neighborhood for a half an hour a day.