The strength of endurance of a muscle depends on lots of things. One main thing that it depends on is a healthy diet. What you eat and drink has certain chemicals that are healthy for you that your body consumes to help strengthen your muscle and build stamina whereas if you put something bad in your body it will evidently weaken your muscles and stamina.
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Regular physical activity can improve your muscle strength and boost your endurance. Exercise delivers oxygen and nutrients to your tissues and helps your cardiovascular system work more efficiently. And when your heart and lung health improve, you have more energy to tackle daily chores.
Answer: Umm well there is no answer chooses but maybe he is a vegetarian or the chicken was bad or was not cooked all the way.
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Probably trying more harder in school
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autonomic responses to pain by directly assessing heart rate and skin conductance, as well as VAS ratings, in response to brief cali-brated heat stimuli of different intensities.
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