I don't have the studies handy but "Why We Sleep" goes into the myriad bad things that happen when you short sleep, all backed by studies. Those bad things aren

I don't have the studies handy but "Why We Sleep" goes into the myriad bad things that happen when you short sleep, all backed by studies. Those bad things aren't "undone" five days later; every night you short sleep is doing irreversible damage along a variety of facets (immune, memory, learning, emotional stability, restoration, etc). Indeed it's absurd to imagine one could wreak havoc on their health for days on end, an incredibly complex system, and then undo it all on the weekend with a few extra hours.