As you exhale, bend the knees and lower them toward your chest, but keep lifting your shoulders and mid-thoracic spine.

随着呼气，弯曲膝盖，向胸腔靠近，仍旧保持肩膀和中背的提升。

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If you can bend back your thumb to touch your lower arm, the ligaments in your feet are probably stretchy, too, Dr. Gastwirth said.

Gast wirth博士说，如果你能扳回拇指弯曲并触摸到下臂，那么你脚下的韧带也可能很有弹性。

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Bend your knees and lower your back knee towards the floor, keeping the front heel down and the knee directly over the centre of the foot.

弯曲你的膝盖以及你的后腿膝盖向地面方向弯曲，保持前脚踝触地，以及膝盖在脚中心的正上方。

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After arriving in Minnesota, the President will host a town hall event in Cannon Falls, Minnesota at Lower Hannah's Bend Park.

WHITEHOUSE: The White House