3 ms·

I had hoped Robert Heinlein's hypothesis (in his fiction books) about zero-G lessening the demands on the hyman body and therefore increasing out lifespans woul

• wongarsu 2y ago
  If the simple version of that hypothesis is true, then why is exercise so beneficial? Even in 1g our lifespan suffers if we don't regularly stress our body. Maybe in 0g it is possible to find a better balance with lower baseline stress, with regular high-stress periods. But any ideas on how to even reach earth-equivalent levels of healthiness require much better space stations than what we have or build today
• devmor 2y ago
  The problem with that idea is that the human body exists via evolutionary fitness for gravitational stress. Imagine a mechanical arm whose purpose is to put constant hydraulic pressure against a platform that is putting pressure towards the arm. Now imagine what happens when you take away the platform - the arm would likely damage itself unless specifically designed to handle the lack of pressure.