I prefer the muscle group splits. If you are going full on with leg workouts each day, you wont be giving yourself time to fully recover.

Try focusing on a muscle group each day then allow at least one-two days of rest for that group before working it again.

For me, working leg muscles has always been a group that needs 2 days of rest. I go full on with squats, lunges, jump-split squats, and burpees. It works the muscle group to exhaustion. So the next day I'll typically do back and biceps. Then chest and triceps. Abs are something i try to do a little bit of each day. Focusing on just abs for an entire day can make it really hard to get out of bed the next day!