How does the muscle become fatigued?

Explanation:

when the functionality capacity of a muscle  over time is being reduced, then the muscle is said to be fatigued.  take for instance before experiencing muscle fatigue at the beginning of exercise you feel agile and very active, but overtime you begin to discover weakness in your muscles. muscle fatigue can be as a result of exercise or health conditions.

Muscle fatigue can occur anywhere in the body. here are some causes of muscle fatigue

answer; i believe the answer is hydraulic action;

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: