到户外锻炼，多呼吸新鲜空气。
You should do exercises at outside and more breath the fresh air.
多呼吸新鲜空气有助于身体健康。
首先要尽量多呼吸新鲜空气，然后是多做户外运动，尽量选择树木较多的地方。
The first step is to get as much as pure air as possible. Prefer outdoor exercise and look for a place with plenty of trees.
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