Question

Discuss the role sleep has been shown to play in weight management. Write at least 2 paragraphs and include at least one physiological mechanisms associated with this connection.

Discuss the role exercise has been shown to play in weight management including at least 2 physiological mechanisms associated with exercise and the role both exercise intensity and duration play in this relationship. At least 4 paragraphs here.

Discuss the suggestions in your book on ways to lose weight in a sound and sensible way. At least 2 paragraphs.

Answer 1

physiology of sleep.

Sleep is a cyclical physiological processes that alternates with longer periods of wakefulness.The sleep-wake cycle influences and regulates phsiological function and behavioral response.

Cricardian Rhythms - People experience cyclical rhythms as a part of their everyday life.The most familiar rhythm is the 24-hour, day-night cycle known as the diurinal or cricardian rhythm.

Cricardian rhythms, including daily sleep-wake cycles,are affected by light and temperature and external factors such as social activities and work routines.All persons have biological clocks that synchronize their sleep cycles.

The biological rhythm of sleep frequently becomes synchronized with other body functions.Changes in body temperature,for example,correlate with sleep patterns.Normally,body temperature peaks in the afternoon, decreases gradually,and then drops sharply after a sleep.When the sleep-wake cycle becomes disrupted. ( example,by working rotating shifts),other physiological functions may change as well.For example, the person may experience a decreased appetite and lose weight. Failure to maintain the individual's usual sleep-wake can adversely influence the client's overall health.

Sleep Regulation.Sleep involves a sequey of physiological states maintained by highly integrated central nervous system activity that is associated with changes in the peripheral nervous, endocrine,cardiovascular, respiratory and muscular systems.

Current theory indicates sleep is thought to be an active inhibitory process.Therefore, the control and regulation of sleep may depend on the interrelationship between two cerebral mechanisms,that intermittently activate and supress the brain's higher centres to control sleep and wakefulness,whereas the other causes sleep.

Sleep may be produced by the release of serotonin from specialized cells in the raphe sleep system of the pons and medulla.

Stages of sleep-​​​​​​-EEG,EMG, and EOG electrical signals show the different brain- wave, muscle, and eye activity are associated with different stages of sleep. Normal sleep involves two phases: nonrapid eye movement (NREM) and rapid eye movement (REM) sleep.

Sleep: An essential factor in weight loss.

Sleep is essential to losing weight.

Sleep is as important to health,well being, and your weight as diet and exercise.

Don't get enough sleep, will not lose as much weight.

Sleep is critical to maintaining ban elevated metabolism.

Recent findings suggest that Sleep problem precede weight gain.

Insufficient and Poor quality sleep lead to fatigue and low metabolism- and therefore gaining weight.

Insufficient sleep and hunger hormones- Getting less than 7 hours of sleep a night will lead even the most determined dieter to make poor nutrition choices. Insufficient sleep Impacts hunger and fullness hormones- ghrelin and leptin.Ghrelin signals your brain that it's time to eat.When you are sleep -deprived, body makes more ghrelin,making you eat more.Leptin cues your brain to stop eating.When you are not getting enough sleep, leptin levels plummet,signaling your brain to keep eating.Put the two together,and it's no wonder sleep deprivation leads to overeating and extra pounds.Sleeping too little also causes cortisol levels to spike.A stress hormone, cortisol signals your body to lower your metabolism to conserve energy to fuel your walking hours.

Recent research indicates that exercises decreases sleep complaints and insomnia in patients.The effects of aerobic exercise on sleep appear to be similar to those of sleeping pills, However more research is needed to compare physical exercise to medical treatments of moderate aerobic exercise increase the amount of slow wave sleep you get.Slow wave sleep refers to deep sleep, where the body and brain have a chance to rejuvenate. Exercise can also help to stabilize your mood and decompress the mind, "a cognitive processes that is important for naturally transistoning to sleep".

Aerobic exercise cause the body release endorphins.These chemical can create a level of activity in the brain keeps some people awake . Individuals should exercise atleast 1 to 2 hours before going to bed, giving endorphin levels time to wash out and the "brain tIme to wind down".