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החל מדקה 5:40
עוד משהו:
Layne Norton: "The rumor that wearing a belt will weaken your core is just plain wrong. Research shows that wearing a belt will actually give you more core activation because it provides your core with something to push against."
עוד משהו:
Layne Norton: "The rumor that wearing a belt will weaken your core is just plain wrong. Research shows that wearing a belt will actually give you more core activation because it provides your core with something to push against."