Aerobic respiration is the most efficient way to produce the energy needed during exercise. if oxygen supplies are depleted, explain what will occur if the excercise continues. how will this effect the athlete.

Basically when oxygen is depleted, the cells switch to anaerobic respiration o produce lactic acid. If exercise continues, lactic acid builds up and cause muscle pain
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-joker7721

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.

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