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.
Foods contain chemical energy, stored as proteins, fats and carbohydrates, that your body must process to obtain energy. Most foods also contain other nutrients, such as vitamins and minerals, that are released during digestion and absorbed within your body.