Is chess a sport?

So, I'm doing a homework project about any sport. So, as I consider chess a sport, I'm choosing it.

Although I'm looking for public opinion just so I can see what people think about whether chess is a sport or not. Everyone feel free to share their opinion on this forum.

My argument: Chess played professionally forces players to concentrate extremely hard on calculating all of the variations for up to 8 hours at a time, with very scarce amounts of refreshment. Players must be both physically and mentally strong to keep up a complete state of concentration for such an amount of time.

Also a link to a site I found useful: http://londonchessconference.com/a-question-of-sport/

Chess is a sport, even if a lot of people will never accept it.

Yes, do you have any reasons for this? (Just so I can protect my case if people say chess is not a sport)

I don't consider chess a sport. 

If chess is a sport then basically anything we do in life should be considered a sport as well. 

A doctor has never said "You are in bad physical shape, you need to do some sport. Try playing chess 30 minutes a day, 3 times a week"

"What do you like to do?"

"I am really into sports! I play chess every day"

"....Ok"

lol

it's not a question if people accept treating chess as a sport, it's a question of a perspective looking at chess.

not this debate again.....

I would like to have a doctor that tells me this xD

OK, seems mixed.

Of course chess is a sport. Is that why Yu have an argument at school Minty? About it. Don't listen to that kid at school who told you that chess is not a sport. He is super duper dumb. Trust me DONT trust him.

No it is a sport

Sport

Not game but sport

Sports comes under indoor sports games 

Yeah

So it is still a sport

But indoors

Even Minh chessmidget thinks it is a sport

This has never been discussed on these forums.  

If you can play without moving any muscles, it's a game.

It is a sport not. Game for the a hundredth time