> You know that eating bananas is as bad for health than staying on a chair all day long, right? For example eating an enormous amount of bananas at once is extremely stressful on the body and my friends who do it all admit they are sick for one month afterwards.

Your friends are likely not fully prepared for the marathon. Saying something and then trying to prove it true with a hear-say based example of an extreme case is ridiculous. Please don't post comments like this on HN.