July 16th, 2010 
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As bodybuilders we are constantly on the lookout for new and effective ways to gain muscle. The latest supplement, a sophisticated training routine, a new diet. Granted, all of these things are crucially important but what is possibly most important of all is sleep.
The best training routine, diet and supplement program will not compensate for insufficient rest, and sleep is the best, and only (in some instances), way of getting this rest. Professor Michael Colgan went as far as to say: €œeven if your training and nutrition program can straight for the mouth of God almighty, without adequate rest your body will fail to adapt.€?
During sleep, growth hormone is produced and protein synthesis (provided protein is consumed prior to sleep) occurs. These are only two beneficial aspects of sleep. Energy consumption reduction and brain cell restoration are two other aspects equally important for bodybuilders.
Throughout this article I will explain the various stages of sleep and their implications for bodybuilders. Outlined also will be the benefits sleep has in terms of muscle recovery and growth.
As bodybuilders we are constantly on the lookout for new and effective ways to gain muscle. The latest supplement, a sophisticated training routine, a new diet. Granted, all of these things are crucially important but what is possibly most important of all is sleep.
The best training routine, diet and supplement program will not compensate for insufficient rest, and sleep is the best, and only (in some instances), way of getting this rest. Professor Michael Colgan went as far as to say: €œeven if your training and nutrition program can straight for the mouth of God almighty, without adequate rest your body will fail to adapt.€?
During sleep, growth hormone is produced and protein synthesis (provided protein is consumed prior to sleep) occurs. These are only two beneficial aspects of sleep. Energy consumption reduction and brain cell restoration are two other aspects equally important for bodybuilders.
Throughout this article I will explain the various stages of sleep and their implications for bodybuilders. Outlined also will be the benefits sleep has in terms of muscle recovery and growth.
Why Do We Sleep?
Sleep serves many vital functions. For bodybuilders the main functions are growth and mental alertness. Sleep provides these effects directly. Without adequate sleep, time in the gym could be, to a large degree, wasted. The following are important functions of sleep.
The repairing of muscle and other tissues, and replace aging or dead cells:
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1. Never Oversleep: Oversleeping may set the bodies clock to a different cycle. This will make trying to fall asleep much harder.
2. Take A Warm Bath: A warm bath will sooth and relax. However, a shower will have the opposite effect so these should be avoided.
Lowered energy consumption is a biological mechanism for resource conservation. We would need many meals per day (rather than the normal 4-6 for bodybuilders) if we did not get enough sleep.With bodybuilders, the name of the game is increased size, so energy conservation out of the gym is paramount. Several meals throughout the day also assists growth, and sleep helps to ensure that food is used to replace energy and rebuild muscle (pre-sleep meals and nocturnal eating help to intensify this effect).
Adenosine (a neurotransmitter that produces ATP, the energy-storage molecule that powers most of the biochemical reactions inside cells) is used as a signal to tell the brain that it needs to rest. Rising and declining concentrations of adenosine suggest that the brain is actually resting during sleep given that adenosine secretion reflects brain activity.During sleep, levels of adenosine decline. Blocking adenosine in the brain has been shown to increase alertness, so this suggests that during sleep the brain is recharging. During the day heightened levels of adenosine, particularly toward the end of the day, suggest that the brain is getting tired.Resting the brain has obvious implications for bodybuilders given that mental alertness is desired during the day, especially during training. Motivation levels are highest when mental alertness is highest. Studies suggest that it is during REM sleep that proper functioning of the brain and alertness is assisted.
Stage One:
Considered the transition stage between sleepfulness and wakefulness, stage one non-REM sleep is the shortest period (2-5%) of sleep in the sleep/wake cycle.Stage Two:
Considered the baseline of sleep, non-REM sleep stage two accounts for 45-60% of sleep.Stages Three & Four:
Termed delta sleep, non-REM sleep stages three and four account for up to 40% of sleep time. These are the deepest stages of sleep and the most restorative for the brain.REM Sleep:
The most active stage of sleep REM accounts for 20-25% of a normal nights sleep. Breathing, heart rate and brain activity quicken during this stage.
Sleeping for 8-10 hours per night is similar to fasting and this is catabolic to muscle growth. However, eating just prior to sleeping, can help to reverse this process and increase protein synthesis. Protein synthesis does occur under conditions of sleep but it occurs in the gastrointestinal tract, not the muscles.Muscle is actually broken down under these conditions to provide our stomach with amino acids during this time of €œstarvation€?. Eating before bed is crucial in offsetting this. Some reports suggest waking up in the middle of the night to eat (nocturnal eating).
Human growth hormone is also released under conditions of sleep. In men, 60% to 70% of daily human growth hormone secretion occurs during early sleep which is typically when the deepest sleep cycles occur. Poor quality sleep can negatively impact human growth hormone levels.Research suggests that it€™s during REM (Rapid Eye Movement: explained later) sleep that the body is able to: restore organs, bones, and tissue; replenish immune cells; and circulate human growth hormone. Sleep has a profound effect on muscle growth and physical well being.
During sleep energy consumption is lowered:
Sleep to recharge the brain:
The Stages Of Sleep & The Sleep/Wake Cycle
The brain follows cycles during sleep, which last between 90 and 100 minutes each. The two different types of sleep are REM and non-REM sleep. A sleep cycle begins with 4 stages of non-REM sleep before they reverse and REM sleep commences. Most people experience around 5 of these cycles per night.
Knowing about sleeps stages are important for bodybuilders as the stages typically follow a set pattern and to adequately recover (get a good night of sleep, and grow) ones brain must experience all of these stages.
A lack of REM and stage three and four sleep is particularly problematic because it is during these periods that the body and brain are complete rest (stages three and four) and memory consolidation occurs (REM). During stages three and four the body and brain are completely at rest due to the slowing of brain activity that occurs.
Due to the neurotransmitter acetylcholine€™s activation in the pons, which in turn activates the medulla, during REM sleep, the body becomes paralysed. This is because the medulla inhibits motor neurons and gives rise to atonia (complete immobility). Newborn babies undergo about 50% of REM sleep per night.
This level decreases as one ages, until, by adulthood, REM will account for 20-25% of sleep per night. The phenomenal growth that occurs as the baby makes the transition to childhood, then to adulthood, suggests that REM is beneficial for growth. Sleep research is not conclusive on this point but many bodybuilders will attest to the benefits of a complete night of uninterrupted sleep (8-10 hours).
The Stages
Getting Adequate Sleep
Often it is hard to get a good night of sleep. Even when we do fall asleep the quality of the sleep may not be sufficient. The following ways can assist in getting that good night sleep and subsequently the benefits thereof.
* Exercise: Exercising, particularly aerobic, during the day will sufficiently tire one out and sleep will come faster at night. Intense training sessions during the late evening will have the opposite effect.
* Avoid Alcohol, Caffeine & Tyrosine-Rich Foods At Night: Caffeine causes hyperactivity and wakefulness. Tyrosine- rich foods are brain stimulating and may keep one awake. Alcohol significantly disrupts sleep by interfering with the stages of sleep.
* Avoid Sleeping Pills: These may work temporarily but in the long term will cause disturbed sleep patterns.
* Correct Sleeping Environment: Keep your room reasonably cool (about 60 degrees). Humidity may cause disrupted sleep. A fan running or soft background music may help to relax and encourage sleep.
* Make evenings relaxed, not stressful affairs.
* Do not watch television in bed. This may also increase alertness. The brain may also decide that bedtime is for television watching and refuse to sleep.
Conclusion
As research has shown, sleep is important for any reasons. For bodybuilders, sleep is particularly important as it restores brain function and alertness in preparation for intense training sessions.
Sleep also enhances muscular recovery through protein synthesis and human growth hormone release. Getting eight to ten hours of quality sleep every night will promote these factors as well as general well being. Recovery will take a backward step if one does not prioritize sleep, so get to sleep if you want to grow.
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Do you like squats? Do you like training your legs?
Research by scientists from the University of Connecticut examined the hormonal responses and adaptation to resistance exercise and training. They noted that high-volume, moderate-to-high-intensity weight training, using short rest intervals and stressing a large muscle mass, multiple joint exercises (legs, Chest, Back, shoulders) tended to produce the greatest acute hormonal elevations (notably testosterone and GH). In comparison low-volume, high-intensity resistance training methods using long rest intervals did not induce a similarly high hormonal response. Sports Med 2005; 35(4):339-61
Muscle failure, the total inability to move a weight during barbell bench press, shoulder press, leg press etc. or the inability to perform a rep in a proper way, has always been differently approached by athletes, who – as bodybuilders – praise it as one of the most effective workout routines to gain muscle growth, whereas powerlifters neglect the idea of benefiting from muscle failure and stick to the prescribed number of reps per set and the prescribed weight limit.
