maybe they didn't realize but if you subjected them to any sort of cognitive, physical... actually you can almost say whatever kind of test, their performance i

maybe they didn't realize but if you subjected them to any sort of cognitive, physical... actually you can almost say whatever kind of test, their performance in just about all of them would vastly downgrade compared to them in a rested sleep status. these results have been known for a long time for various problem solving tasks (your error rate and task completion time will skyrocket), physically focused things like weight lifting or cardio (you will lift less and not be able to run as long before hitting a wall etc.), reaction tests (you will become a slowpoke), memory tests, mood and other psychometrics. there are also fairly obvious outward physiological effects, like increased collagen production will give you baggy eyes, etc.