what energy system and fuel is used while sleeping?
442183
Yes.. If you dont want to stop breathing and die, energy is eused.
971153
Most mammals lower their body temperature by 1 to 2°C during sleep, resulting in a lowering of energy metabolism by about 7-15%.
249022
no "physical" energy is lost ihe bike is there, your there, etc..\n\nyou become tired due to buildup of acids in your muscles . lack of oxygen and hydration.
230939
probably you mean ELECTRICITY.\noil and petroleum could be used to produce electricity. There is such a thing as electrical energy.
241725
The ultimate source of energy in all. living systems is the sun
174582
The energy contained in corn is in the form of stored chemical energy (in the form of hydrocarbons), that was created by solar energy and photosynthesis of the corn plant. \n\nThe seeds of corn can be made into sugar, food, ethanol, or even burnt alone as fuel. Each of these products contains hydrocarbons that contain chemical energy that can be converted to heat energy. Some new work is being done to convert the rest of the corn plant to ethanol or other sources of energy. It was common to burn corn cobs during the depression as fuel to heat homes. Today, they may be converted to alchohol fuel for automobiles using genetically engineered yeast. Shell Global Solutions and Iogen in Canada have built a demonstration plant to create ethanol from cellulose, which could include the entire corn plant, or other plant materials like wheat straw that shows great promise for producing environmentally-friendly economic fuel.
237029
Several.\n\nGeo-thermal is one of the best.  Basically, this is power derived from the heat of the earth.  Unfortunately, there are few places where this can be used.  Iceland, is a prime location for geothermal energy and they use it most effectively.\n\nWind Power:  quickly gaining in popularity, these are windmill powered turbines.\n\nSolar Power:  The sun is an excellent source of power.  Unfortunately, solar cells have been typically expensive to produce.  \n\nFuel Cells.  President Bush's pet project is to store hydrogen and use that as fuel.  Unfortunately there are some problems not mentioned by the president.  Hydrogen is the simplest element (smallest atom).  This makes it extremely easy to escape whatever container we put it in.  If you fill your cars fuel cell and let it sit for a couple of weeks, you will have an empty cell.  You need a lot of hydrogen to provide power.   You might need a bigger fuel cell than what is commonly suggested.  You might need a hydrogen tank the size of a car in order to go the distance usually provided in a sterotypical gas tank.  Benefits:  hydrogen is common and burns clean.\n\nNuclear power.  The big boogieman power source.  The sad truth is, we will have to expand nuclear power to keep up with demand if we reduce our fossil fuel consumption.  It's a necessary evil.\n\nTidal power:  Using wave action to provide power along coastal regions.  There are several of these types of power plants.\n\nHydroelectric:  using falling water from waterfalls, dams for fast moving rivers to power turbines.  One  of the best loved methods of producing "clean" power.  Drawbacks include altering the environmet and seriously affecting fish spawning.  Salmon populations have dropped enormously.
788942
Your question leads us to try and come up with what creates energy and that is not going to happen.\nI suppose you are asking what conversion processes exist and which is best for your needs or the needs of the general population.\nThe energy in fossil fuels is converted to heat and the most popular source is coal because it is least expensive.  That heat energy from coal is then converted to electricity at most power plants.\nThe energy in petroleum is converted to kinetic energy in your car's engine.  Since we buy millions of barrels per day, one can assume it is the most popular.\nThe energy coming from atomic fusion is the greatest energy used on the planet.  We get it from the sun.  We can capture that energy and convert it to electricity too.  Not only is it our planet's greatest source of heat, but also is the greatest source of light.  Given the number of people sunbathing at the pool, one can assume it is the most popular, too.  Atomic energy can also be pulled from uranium and turned into electricity or used to destroy entire towns.  One is popular, the other is not.\nPlease add some more info to your question.  It is too vague for me to answer well.  Just as minootoo points out, the pros and cons of ALL sources of energy is beyond the scope of this forum.
406611
Either hydrogen or ethanol.  Research is being done at this moment to find safe, cheap, and efficient ways to bring these alternatives to the general public (of the US).  Nuclear power isn't very practical when it comes to cars, and it's proven to be pretty darned dangerous when it comes to powering homes and businesses.  Solar power is another option, but so far, it's not economical. (And for the people who say that we can't use solar power because the sun is running out, don't you realize that when the sun runs out, so do we?  Until then, the solar power is a very real - and potent - source of energy.)
953005
Your metabolism determines how much energy you expend while at rest; it does not determine how well you sleep.\n\nI'll give you some pointers on getting a better night's sleep. If these "sleep hygiene" tips don't work, you may wish to consult a doctor.\n\n1. Avoid caffeine. It sounds like you're already doing this, so good for you! (I'm posting this advice anyway in case others are having similar problems.) Also avoid smoking (as nicotine is a stimulant) and drinking alcohol (which interferes with natural sleep) before bedtime.\n\n2. Try to go to bed and get up the same time each day, even if you don't have to (e.g., on weekends). This will help your body establish a stable sleep schedule.\n\n3. Turn the lights down about an hour before your bedtime. Light sends signals to your brain that it should be awake, and this is not the message you want to send if you want some sleep!\n\n4. Exercise regularly! But avoid exercising a few hours before your bedtime.\n\n5. Take a warm bath or shower before bed. This will help relax you.\n\n6. Drink milk shortly before bedtime, or eat some turkey. Both of these foods contain substances that help promote sleep. Some people have reported success with taking melatonin.\n\n7. Do not use your bed to watch TV, play video games, read, or do your homework. You want your brain to associate being in bed with going to sleep, not other activities.\n\n8. If you find you cannot sleep, don't stay in bed and get anxious about how much sleep you're missing. Instead, get up, and find some relaxing activity you can do (e.g., reading) under dim light until you begin to feel drowsy again.\n\n9. Be careful about taking sleep-inducing medications, as these can be habit-forming and also interfere with the REM (dream) phase of sleep, which is the most refreshing part of sleep.\n\nGood luck!
846365
Thermal energy IS heat.
181609
It is your minds way of releasing excess energy and recooperating while you sleep
519547
Most likely Energy in Joules. We need a context though.
873320
Yes, you do burn calories while sleeping.   It depends on your physical condition and the amount of physical activities you do during the day.  An ordinary 160 lb person can burn an average of 550 calories during an 8 hr. sleep. The more physical activities you do, the more calories you will burn while sleeping.
1150354
Engines that burn natural gas, ethanol, or recycled food oils.  Also, solar energy, wind energy, and fuel cells.
1019039
Rotating turbines attached to electrical generators produce most commercially available electricity. Turbines may be driven by using steam, water, wind or other fluids as an intermediate energy carrier. The most common usage is by steam in fossil fuel power plants or nuclear power plants, and by water in hydroelectric dams. Alternately, turbines can be driven directly by the combustion of natural gas or oil. Combined cycle gas turbine plants offer efficiencies of up to 60%. They generate power by burning natural gas in a gas turbine and use residual heat to generate additional electricity from steam. Wind turbines generate electricity by using the wind. Solar chimneys use wind that is artificially produced inside the chimney by heating it with sunlight. Solar parabolic troughs and solar power towers concentrate sunlight to heat a heat transfer fluid that is used to produce steam to turn a turbine. Small electricity generators are often powered by reciprocating engines burning diesel, biogas or natural gas. Diesel engines are often used for back up generation, usually at low voltages. Biogas is often combusted where it is produced, such as a landfill or wastewater treatment plant, with a reciprocating engine or a microturbine, which is a small gas turbine.
179767
Yes. When you sleep, its kinda like recharging the battery in your car. If its low, then nothing really works right. This includes your immune system.