My boxing training sessions were about 50-50 exercises and the padding/sparring session (in which there were big breaks). In my undergrad, I was made to take 6

My boxing training sessions were about 50-50 exercises and the padding/sparring session (in which there were big breaks). In my undergrad, I was made to take 6 math courses, and about 18 physics courses which used that math [1]. Plus additional Engineering/CS electives. So over a 25-75 ratio of exercise to "real" stuff. Much better ratio than boxing. [1] If you decide that the math courses have nothing real/interesting in them. Which is not true.