They are not very careful to avoid implying the expected outcome, though, which should be understandable as it refers to common wisdom. e.g. "more is not always

They are not very careful to avoid implying the expected outcome, though, which should be understandable as it refers to common wisdom. e.g. "more is not always better" is part of the interpretation, nevertheless they don't imply any causative effects (on the landing page, at least; didn't read the paper). In that sense, if feeling too depressed for extreme sport, maybe a walk ever now and then should at least not be neglected.