Marine Corps Physical Fitness Test. Fitness is essential to the day-to-day effectiveness and combat readiness of the Marine Corps. The Marine Corps considers physical fitness an indispensable aspect of leadership.
A: Chemical energy is for producing heat in the human body to sustain vital functions, converting solar energy in plants through photosynthesis, producing electrical energy in batteries to power devices and burning fossil fuels in combustion engines to produce heat or motion.
The body prefers carbohydrate as it is the easiest to break down, and is also a quick release energy source. The reason the body doesn't like fats as energy, is because they h â¦ ave other uses, and the body likes to keep it for those reasons. It is also the energy source that is highest in energy, and they also provide the body with other vital nutrients.