Is chess a good sport or bad one?

Generally to the question asked. People will tell it's good sport as it gives brain exercise. But what if I tell you it's actually debatable?. If there is a person named A. And plays 20 games per day. Whether its bullet or rapid. And gets rating increased. He enjoys. Now at the very next day if he loses rating. He gets angry about rating lost. Like this are you exercising your brain or stressing it for just an online rating? Even masters though earn good amount of money and fame know they have to strain alot of energy and time for just 1 game. And moreover sitting infront of a board does not give physical exercise.I would say it's good sport if we play in limit and not think much about rating and comparing our rating to someone else. If someone thinks it's a bad sport. You can also tell why. I am sure this topic is pretty good for a debate.

I'm 62, at my rating floor and my study time is less than serious. But I am enjoying the game and tournaments more than ever. Im in it mainly for the mental exercise.

Karpov lost 40 Lbs of body weight in his first match against Kasparov.

Accounts indicate that Anatoly Karpov lost a significant amount of weight during his 1984 World Chess Championship match against Garry Kasparov. 
While some sources mention Karpov lost more than 22 pounds (about 10 kg) during the five-month, 48-game match, it's not confirmed that he lost exactly 40 pounds. The match was ultimately terminated by the President of FIDE, citing concerns about both players' health, particularly Karpov's exhaustion and significant weight loss