Those studies are mostly hot garbage. One compares 28 hour shifts to shifts that were 'reduced' to 24 hours, for example. You're going to be zonked long before

Those studies are mostly hot garbage. One compares 28 hour shifts to shifts that were 'reduced' to 24 hours, for example. You're going to be zonked long before that, so the change has a fairly small benefit. Handoff is also something could be presumably be fixed with better training and/or technology, whereas sleep deprivation is bumping into fundamental limits of human physiology. It baffles me that the medical field is so attached to these hours when there's tons of laboratory experiments and real-world data (pilots, long-haul truckers, armed forces, etc) showing people don't do well.