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.
In human body it daily generates over 50 kg of ATP, which is subsequently used to provide energy for various biochemical reactions, including DNA and protein synthesis, muscle contraction, transport of nutrients and neural activity, to name just a few.