As written in a title, recently I have backache.
Several years ago, I suddenly felt strong backache. After that, it stopped and restarted. And now I feel a little backache, though I don't do nothing.
My mother say that the reason is workout shortage. I haven't workout since February in last year. I had played Ingress with my bicycle for 2 month. But I don't want to play Ingress again. I have to find a good excise.