Question

→ What is the cause of muscle fatigue all the time of excessive physical labour?

Answer 1

muscle fatigue is the decline in ability of amuscle to generate force It can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction

Answer 2

Heya buddy !!!

Here's the answer you are looking for

During physical labour our body does not get enough oxygen to oxidize of nutrients in order to give energy, that is does not oxidize sugar to form glucose which is required during physical labour.

So in order to get energy without enough oxygen oxidation starts without oxygen and instead of CO2 the Oxidation reaction forms lactic acid.

The production of lactic acid is the cause of muscle fatigue during excessive physical labour.


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