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when you exercise your body produces lactic acid and that makes your muscles burn. this happens when your body isn't getting enough oxygen and cellular respiration still needs to take place. it is called anaerobic respiration and produces makes less oxygen (through the red blood cells) then aerobic respiration- meaning with oxygen. your muscles get tired because your blood is pumping faster to give them oxygen and you are working them harder them your body is use to.

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βˆ™ 13y ago
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βˆ™ 6mo ago

Muscles get tired due to the buildup of lactic acid, a byproduct of energy production in the absence of sufficient oxygen. This can lead to decreased muscle function and a feeling of fatigue. Additionally, depletion of energy stores such as glycogen and the accumulation of metabolic byproducts can also contribute to muscle fatigue.

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βˆ™ 10y ago

Muscles become tired due to the prolonged contraction of them during exercising. The glycogen stored will decrease in the muscles and the fatigue will increase.

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Q: Why muscles get tired?
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Lactic acid accumulates in muscles during intense exercise, leading to muscle fatigue and soreness. It can also interfere with muscle contractions and may reduce performance. However, lactic acid is eventually broken down and cleared from the muscles to allow for recovery.

Related questions

How do muscles get tired?

there is force that makes your muscles tired


Exercises that make muscles tired?

All exercises eventually make muscles tired.


What are some ways of soothing tired muscles?

You can sooth tired muscles by getting a massage, or massaging the effected muscles yourself. You can also use a warm compress or icy hot which can help soothe your tired muscles.


What happens when muscles get tired?

Even the strongest muscles can get tired if they are overworked. When muscles get tired, they may become cramped or experience pain. It is best to refrain from exertion when the muscles start hurting.


What should you do when your muscles get tired?

Rest.


What does it take to get your muscles tired?

pop ten pill mix or match get tired


Is cold compress bad for tired muscles?

A cold compress is good for swollen tissues. For tired muscles the best thing is heat or massage.


Why do lips shake when tired?

When we are tired, our muscles can become fatigued, including the muscles around our lips. This fatigue can lead to trembling or shaking of the lips as they struggle to maintain control and coordination. It's a common physical response to exhaustion.


What can you do when the muscles of your arm get tired?

Use your legs.


What determines how fast your reflexes are?

YOUR BRAIN REACTION,YOUR muscles, tired or no tired,even weather.


When you do lot of exercise your muscles get tired and you feel cramps in your muscles why?

lactic acid accumulation


Why does heat make you tired?

Because the heat makes your muscles relax and therefore makes you tired.