Physical exercise causes stress on the bones, and therefore is not beneficial for bone development.

DEVELOPING BONE

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	True
B	False
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -When stress becomes chronic, our diets cannot replace the calcium depletion fast enough so our bones are constantly being leached of calcium, leading to potentially more porous bones, brittle bones and osteoporosis.

Detailed explanation-2: -Chronic stress activates the HPA axis and sympathetic nervous system, suppresses the secretion of gonadal hormone and growth hormone, and increases inflammatory cytokines, eventually leading to bone loss by inhibiting bone formation and stimulating bone resorption.

Detailed explanation-3: -Exercising regularly reduces the rate of bone loss and conserves bone tissue, lowering the risk of fractures. Exercise also helps reduce the risk of falling. Exercise that is too vigorous may increase the risk of fractures.

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