That would be the nervous system.
Answer:
Overload.
Explanation:
Overload may be defined as the second most important principle that main aim is to improve the physical fitness of the individual. Overload improves the strength of the individual.
Different muscles are involved in the process of overload. Overload can be achieved by lifting the heavier objects for few time. The stress on the muscle is applied during the overload. The continuous overload changes the physiologic adaptation of the body.
Thus, the answer is overload.
Answer:
I would say early twenties to mid-thirties because they are quite polite and don't ask too many questions.
