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A swimmer,What else!
A professor
a professional photographer and sometimes lucky.
a professional photographer and sometimes lucky.
It depends on which aspect of a person's health they specialise in... It could be a dietician, a physiotherapist or psychiatrist.
Medical sales professional. Medical equipment salesperson.
You would call a professional cook a chef.
Bill Clinton. Richard Nixon. Many others.
A Sportsman but it some people say it by the sport they do for example If someone played football you may call them a football player If someone was in the olypmics you may call them an athlete ect
A person who is always down can be called a pessimist or the person may be depressed. Chronic depression is a matter for a professional to deal with. A pessimist is not sick, they're just annoying.
An 'acquaintance' might be one such person. A 'colleague' might be a term used to describe such a person of a more professional relationship.friend just not a close one or an associate
Call a professional HVAC service person. Ask them.