The correct medical term for someone exercise obsessed is 'physically attractive'.
A person obsessed with water may be referred to as a "hydrophile" or "hydrophilic."
It could be a chronophile (one who is obsessed about time).
Grammar Nazi
"Otaku", "Weeb", or "Weeaboo".
Well it depends. If you're a man and you're obsessed with another man well it's called being gay. And if you're a girl and you're obsessed with men it's called love!
A person that loves all things French might be called a Francophile.
a foot fetish (podophilia). A person with podophilia is a podophile (not to be confused with pedophile).
A person who is obsessed with book is a bibliophile.
It is called pyromania. The person is a pyromaniac, or firebug.
an obsessed person is somebody who only thinks of one thing and does it all the time
A person that hunts dinosaur bones is called a paleontologist.
Ecocentrism or environmentalism is the ideology that focuses on the protection and preservation of the Earth's natural environment. Those who are obsessed with ensuring the health and sustainability of the planet are often referred to as environmentalists or ecocentric individuals.