while we practice we cant do it and when just sitting sometimes it happen (any ability) why?? i think becuase we miss the feeling or we cant use feeling in that time because u cant make feeling or if u imagen anything to make u feel something u will lose ur focus. and i think every one done any power of that things like tk he or she was feeling something before and while and after he doing it . try to remember what u was feeling when it happened to u by chance u will remember that thier was feeling.(like pain . hopeless . angry .... and so on). thx for reading it.

You have to be focused. Not straining, but completely clear on your goal.

What??

They are talking about psychic abilities.