When I got the paperwork for Superstars, and I saw they asked what size swimsuit I wear, I had a hot flash, nearly broke into cold sweats and hired a trainer immediately.
On the environmental front there's concern about global warming and high levels of carbon dioxide, and trees take in CO2 and store carbon.
If you're not pushing your own technique to its own limits with the risk that it might just crumble at any moment, then you're not really doing your job.