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www.reference.com/article/charge-physical-body-energy-895f543992849fc1

The physical body can be charged with energy by eating a healthy diet and taking supplements, exercising and sleeping regularly, and drinking plenty of water. Finding what works for each individual body is key to sustained energy levels.

www.reference.com/science/energy-involved-chemical-physical-changes-8b5e368b80756fa8

Chemical changes within matter always use energy; physical changes sometimes use energy, though they use much less energy than chemical changes. Physical changes use energy to change the physical state of a substance. Chemical changes either release or absorb energy when changing a substance into a

www.reference.com/science/work-physics-a310b0a21e7039a5

In physics, "work" is when a force applied to an object moves the object in the same direction as the force. If someone pushes against a wall, no work is done on the wall because it does not move. However, depressing a letter on a computer keyboard requires work.

www.reference.com/article/physical-change-bb9fb29e6d03958d

In chemistry, a physical change occurs when matter is altered without modifying its basic molecular composition. Some examples of physical changes include boiling or freezing of water, chopping up wood, melting of gold or dissolving salt in water.

www.reference.com/world-view/physical-health-7fa916b66aac73e8

Physical health is essential to the complete health of an individual; this includes everything from overall well-being to physical fitness. It can also be defined as a state of physical well-being in which the individual is able to perform daily activities without problems.

www.reference.com/article/physics-hard-547168e485c4d240

According to the American Association for the Advancement of Science, the study of physics can be difficult because of the requirement to find equations describing changes of a system over a period of time, and this cannot currently be done with the help of computers. As a result, students have to w

www.reference.com/article/physical-activity-important-b042fdaec12fba88

Physical activity is important because it increases a person's chances of a long life, improves self-esteem and reduces depression levels, according to the United States Department of Agriculture's ChooseMyPlate.gov website. This website is designed to help individuals make wise health choices.

www.reference.com/article/physical-education-6a85419ccc9627d9

Physical education is the teaching of healthy, active lifestyles to students. Often called gym or P.E., physical education is a common requirement throughout elementary and junior high school. It is often required in higher levels of education as well, such as high school and college or university.

www.reference.com/world-view/meaning-physical-education-c2a8492a0876d09c

Physical education refers to the instruction of physical activities and games in school. Physical education has many benefits for elementary and high schools students.

www.reference.com/article/physical-stress-645d38dad10978ba

Physical stress is the body's normal response to events that are upsetting or that throw people mentally and emotionally out of balance, according to Helpguide.org. The source notes that physical stress is a way the body attempts to protect itself from experiencing further harm.