Осанка. Сидим за столом правильно.
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![Здоровая осанка [беседа с Леонидом Гарценштейном]](https://sun9-35.userapi.com/15Z6VP26Gb83p_8Zf9F1eGmKnKCisGwo56pmFA/q7kLMkanv4U.jpg)
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