When walking down on steps

I still have a slight pain in my both knees since I came back from Yakushima. The reason is so simple.
I used them too hard in such a short time of period.
Just in case, I took an X-ray and found they were no seriously damaged. It seems there is just a inflammation in meniscus.
However, I was told from my doc, that I should start walking constantly so I walked about 3km today around my house.

I hope Mizuki Noguchi will recover soon and compete at women's marathon game.