Well learning is the best thing to do because it keeps your brain stimulated longer and it is never a bad idea to learn something new. Learning can enhance your life when you go to college because the stuff you learn in college is stuff you will have to use in your future job that will be the majority of what you do.
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Answer:
A) overloading the muscles to often
Explanation:
You have to allow your muscles to fully recover after a workout. Since when you workout your tearing the fibers in your muscles, and during your rest period your allowing your body to rebuild those fibers and during that process they add more fibers to your muscle. Making your muscles bigger and stronger.
Oxygen is required for the body to be able to use fat for fuel. Since aerobic exercise uses oxygen to produce energy, it can use both fat and glucose for fuel. Anaerobic exercise, on the other hand, can only use glucose for fuel.