Not even finished Greymoor yet but already two quest givers have recruited my character on the basis that they "look sturdy".

Sure, this makes sense if you're a strapping Nord warrior but what about gangling Altmer wizards or petite Breton assassins?

To help with immersion it might be better to stay away from such direct references to the player character's appearance and stick to more neutral language like "you seem capable" or "you look like you can handle yourself".