Corn, beans and squash. Everyday. Oh, you have to grow it and harvest it without tractors. Caloric balance achieved!
And a layer of tropical diseases/parasites would also help churn through calories. They may have been in better shape but few sane people would claim they were actually any healthier than we are today.
alt Hacker News
And a layer of tropical diseases/parasites would also help churn through calories. They may have been in better shape but few sane people would claim they were actually any healthier than we are today.