The above example accounts for physical education classes once per week. Obviously, the benefits multiply if your students have PE more than once a week.
2x a week = 53 hours = 11% added
3x a week = 79.5 hours = 17% added
4x a week = 106 hours = 22% added
5x a week = 132.5 hours = 28%
Now imagine if every co-curricular class was integrated with the classroom curriculum….