For the same reason that a car burns more gas when it is driving then when it is sitting still at idle. When you work you burn calories. When you rest you still burn calories but not nearly as much. If you want the fire to burn hotter you need more fuel or energy. Sorry it's not a technical answer but it still explains why.
Because if you don't eat, you don't have no energy provided for you. You might not go to sleep because you haven't eaten anything. There are five types of energy there are, they are: Heat Energy Light Energy Movement Energy Sound Energy Chemical Energy. More food you eat, the more energy and blood will pump around.
Energy usage is increasing because more and more people are using energy. This could be due to the growing population, technology that requires more energy, or perhaps a society that is used to wasting energy.
It wasn't stated by a single person; rather, it evolved over time. For example, more and more types of energy gradually got recognized as being equivalent, or interchangeable.
The law of conservation of energy was not invented, discovered, or promulgated by one single person. Rather, it gradually developed over time, as the understanding of energy improved, and more types of energy were understood to be interchangeable.
Preventing the waste or loss of energy is to act conservatively to minimize energy expenditure. For instance, one could drink blended vegetables rather than using more energy to chew and break them down internally during digestion.
Get more sleep or take vitamins
The further north you go from the equator the cooler it is. Cold countries are perhaps more likely to have useful winds to harness rather then solar energy.
Get more sleep. eat better, excersize, have sex it worked for me
Some people need more sleep than others for several reasons. Some people are busier and need more sleep and some may need more sleep due to genetic reasons.
Because The Younger You Are The More sleep You Need . When Your Younger Your Body Needs More Time To Fuel Up All Your Energy .
yes you do pay better attention if you sleep but if you drink energy drinks you will pay attention as well
Sleep restores your energy and prepares you for more activity.
It's better for anyone teen child or adult to get more sleep. The more sleep u get the better ur mental & physical health will be. Also the more energy u will have, and the more alert and focused u will be.
SLEEP helps recharge your energy and make you more concentrated and focused in your sport .
get more sleep at night, drink energy drinks, or soda.
Drink a 5hour energy shot; or eat chocolate!
yes,shorter people do have more energy then taller people.