Some small fraction of people are perfectly fine working 12 hours a week a day 7 days a week 50 weeks a year, they can do this with the same amount of strain th

Some small fraction of people are perfectly fine working 12 hours a week a day 7 days a week 50 weeks a year, they can do this with the same amount of strain that the median person experiences in regular 8 hours a day, 40 hour weeks. Do you not believe such people exist?