Twelve hour shifts wrecks your sleep

This pilot study indicates that shift work and long hours have a negative impact on nurses’ sleep patterns. Although we did not find a significant relationship between sleep deficiency and cognitive mistakes, we did find that nurses working 12-hr rotations had more difficulties
with sleep and sleepiness.

https://onlinelibrary.wiley.com/doi/10.1111/jonm.12513

You know you knew this. But it is good to know that someone is looking at this.