<span>What is the role of the eustachian tube?
<span>It has the role of draining the fluids in the inner ear and regulating the pressure in the ears to protect the eardrum.</span></span>
Answer:
you might forget about what you were looking for or might misplace something so always becareful.
Explanation:
You should hold a stretch for as long as it does not become too painful for you. Stretch as much as your body needs but not too much because, it could tear up your muscles and tendons. This is the best answer i could give you.
Instinct is a natural thing, its hereditary, where as adopted behavior is to do with environment <span />
