Quick Reference: Hours → % of a Week
A week has 168 total hours168 hrs = 100%
8 hours of sleep per night (56 hrs/week)≈ 33%
10 hours of sleep per night (70 hrs/week)≈ 42%
Practice, 2.5 hrs a day, 5 days a week (12.5 hrs/week)≈ 7%
Practice, 2.5 hrs a day, 3 days a week (7.5 hrs/week)≈ 4%