I liked it and hated it.
I liked it when it was about doing the best you can do and improving on it, like hitting the weight room and going hard in the squat rack or the bench press, or something like doing resistance band exercises or even something like stadium runs (running up and down a stadium's stairs). And I got to play some football, basketball, four square, dodgeball with my friends.
And it was easy credits as long as you dressed it and put forth effort in the exercises.
I hated it when it came to timed runs, namely because running isn't my thing too much (though these days I try) and dealing with some retarded ass coaches who thought it would be a good idea when everyone just finished a good lunch to do 4 laps running despite wanting to drop a deuce on the track.
Honestly, I wish gym class included some boxing or something of that nature. Something to really let off steam, teach important skills about how to handle yourself if shit pops off, and something that really trains you well. And included information on how to maximize your goals, like building the most muscle mass possible without hitting the steroid rack, or cutting the fat off.