Answer:
At the risk of oversimplification, individuals seem to be at their most “rational” when they feel anxious. ... In short, by motivating individuals to think through their behavioral strategy, fear is unlikely to facilitate collective efforts. In fact, it may even increase the likelihood of free riding.
Without gravity the muscle has no way to work naturally, it just floats around if you move that muscle, in space you cant lift weights to keep them strong, because like i said everything just floats