在医生的准许下，逐步回到正常的生活状态。 保护好自己的免疫系统。 对于返回工作岗位和学校这件事，要小心小心再小心。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Keep in mind that you will be easily exhausted and you may want to start slow. Try to be out of bed and be active without becoming too tired. You can gradually work your way up to one or two daily activities in order to give your body a chance to fully recuperate.   You can begin with simple breathing exercises in bed. Inhale deeply and hold for three seconds, then release with lips partially closed. Work your way up to short walks around your home or apartment. Once this is not exhausting, begi