If you're as old as me, you may remember the President's Council on Physical Fitness. The program, a project of President John F. Kennedy, established benchmarks for the physical fitness of high school students nationwide. If you could get hit their standards, you would receive a medal. Few did. Why? Because it was difficult.
This video shows you a typical workout for a phys ed class in California. Unless you're doing CrossFit, you're not matching what these kids could do.