It can occur at any time, you can not feel it. And it may be something you can imagine that to happen to yourself, but sometimes, unfortunately, may become lucky.
It can occur at any time, but you can't feel it, and it may be that your unexpected that occurs with your own body, but sometimes bad luck may be fortunate.
It can occur at any time, that you are not able to feel it, and it may be that you are not, it is expected that there will be up to the of your own, but sometimes it may become a good luck bad luck.