+ive: not too bad feeling good fine good neutral: Same old Same as usual Can't complain -ive: Not so good I've been better I've seen better days ALL of the +ive replies can be followed by "thanks", "how about you?", "yourself" ...etc. for e.g. Feeling good, thanks, how about you? neutral: don't say "thanks" after but you can ask the same back. e.g. Can't complain, how you doing? -ive: Again, don't say "thanks" e.g. I've seen better days, and you? Of course there are many more answers you can give...PLEASE don't feel you HAVE to say "fine, not fine" all the time! End up sounding like a robot! Just say what you feel.

Hi Masami As maky117 says, in English 'How are you' is usually a greeting - the asker is definitely not enquiring about your health (unless they are your doctor!). Your response of 'I'm fine, thank you' is a perfectly good one. You can also say 'Fine, thanks; how are you', but you should not expect any answer other than 'fine'.

i m better than before!

Hi, You could also say....."I'm very well, thank you." or alternatively that... "you are not very well." Nik

What you have just mentioned is the most common reply. That's fine if you use it everytime, because it is simply just a reply to a greeting. If you don't feel good and want someone to listen to your story, you can be frank for what goes wrong. However, the one who ask "How are you?" may not be a intentional listener for your story.