Here are some English translations of that phrase, depending on the context:
* You look great! (This is a more informal way of saying it.)
* You're looking well. (This is a more formal way of saying it.)
* You seem to be in good shape. (This is a more neutral way of saying it.)
* You're doing well. (This is a broader statement, not just about physical health.)
The best translation will depend on the specific situation and the intended meaning.