thats great that you got over your eating disorder, and great that you want to stay thin and healthy, but i am the same height as you
and all the websites and charts say that between 61 and 76 or something is the healthy weight range.
i just hope you aren't doing any damage mate
being thin is one thing, but being HEALTHY is another.
Maybe work on toning your muscles, this can be a nice thing too, and its still quite thin.
Also what sort of diet are u on? cos that can help things as well.
Sorry if i sound like i am worried and concerned, but like the above people, we are
we dont want to see you head down an unsafe path. we are all here to help. so please dont hesitate to talk to us.