户外锻炼在英语中通常可以表达为 “do outdoor exercise” 或 “participate in outdoor physical activity”。以下是一些相关的英语表达方式，它们都可以用来描述户外锻炼：
- Go for a jog outside
- Take a walk in the park
- Bike ride in the countryside
- Play a sport outdoors
- Do yoga in the fresh air
- Have a hike in nature
- Enjoy a swim in an outdoor pool or lake
- Do some strength training in a local park
- Take part in an outdoor fitness class
- Engage in outdoor recreation
这些表达方式都非常贴近日常英语，可以用于各种不同的户外锻炼场景。