There's a more interesting report from NASA on this mission here [1]. They were specifically experimenting to see what would happen to this crew with sleep depr

There's a more interesting report from NASA on this mission here [1]. They were specifically experimenting to see what would happen to this crew with sleep deprivation. They were only sleep deprived during the week, though it's unstated how much sleep they were allowed on the weekends. On a long term mission there will be an immense number of things that need to be done each and every day, and with the utmost precision. It's certainly important to see if sleep can be sacrificed when necessary and, if so, for how long before it starts to negatively effect their performance. [1] - https://www.nasa.gov/feature/nasa-s-final-hera-campaign-4-crew-lands-safely-back-on-earth-well-sort-of https://www.nasa.gov/feature/nasa-s-final-hera-campaign-4-cr...