Bobo The Great

Maybe they are giant cats on normal couches?

That’s not what I’m saying, a healthy diet consists of different sources of calories. There’s no “better source than others”, you need all in different quantities. Some are worse in excess, but you still need all for a balanced nutrition.

Everything is bad in excessive, especially oils and fats given their high calory content. Sugar may be ““worse””, doesn’t mean fats are good

Except if you are the overeating type of depressed person.

Ever spilled a drop of diesel? Exactly that happens

To be fair, a metal subway car (provided they removed every piece of rubber, plastic and electronic component) is environmental quite neutral, as metal and glass are inert. In this case though, I’m pretty sure tennis ball contain plastic so it wouldn’t be whise to just leave them in the open. If they were glass balls, it would be better.