It's not just about being able to keep that up, either - it's less efficient to work 80 hours consistently and you end up with a large number of hours worked th

It's not just about being able to keep that up, either - it's less efficient to work 80 hours consistently and you end up with a large number of hours worked that you get a negative return on because they contribute to burnout without increasing the amount of work you get done by much at all.