Comment by gtowey

> But these seem like pretty reasonable arguments? At the very least you should retort with a study that at least tried to control for confounders.

I disagree. The fundamental premise here is that regular exercise has profound health benefits. Tennis is simply one example.

The rebuttals to tennis here ignore the obvious truth -- there are limitless ways to get regular exercise; you just have to have some time and be willing to put some effort in. With very few exceptions there is nobody in the world for whom it's not a realistic goal.

People who simply do not want to can come up with endless excuses to rationalize it.