Endure.
One of the reasons for a 2.4km run in the NAPFA test is to gauge the amount of oxygen, someone can take in with each breathe. The more you can take, the more oxygen you muscles get, the faster you can run, the lesser latic acid you will receive.
However, there are other factors too. Things like the shoe you are wearing, the type of shirt, your breathing technique, or you mental endurance to simply not stop.
Stoping, or halting in the midst of a run causes your muscles to relax, and that makes it harder to contract and work as well when you run again later. Thus, it is high discouraged to stop when running long distances.
However, if you think of it along these lines, won't it be the same for other activites?
If you are skipping, it makes it hard to continue again once you stopped. Losing the rhythm, legs feeling tired all of a sudden.
If you are doing homework, and your friend comes over to talk to you, causing you to halt momentarily. Won't you lose the mood to work?
Fortunately or Unfortunatey, Muay Thai training introduces a whole new level of Mental Endurance.
Who, in the hell, has the right mind to ask you to bunny hop across the badminton court length-wise, for 3 laps? You can't stop too. Else, you will feel so dam frigging tired to continue.
...
God. It was fun.
Later...
Taken by one of the magicians::
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