It depends on your goals. If you want muscle mass, six full-body workouts are a bit too much.
But if you want to lose weight, then they’re okay.
Related: 15-Min Full Body Workout
There’s a reason why such workouts are so popular: They are a good method of training for improving your posture, balance, sports performance, functionality and weight loss.
However, if it’s really big muscles you want, try body-part splits instead.