How frequently train my abs?
Strengthening and toning your abs requires no more or no less effort than any other muscular group in the body.
Exercise recommends resting a day in between abdominal workouts to allow for muscular recovery and growth.
Over-training or doing abdominal routines several days in a row may contribute to burnout or injury.
Doing two to three abdominal strength training sessions each week will help build muscle and tone the stomach.
However, your stomach muscles are much the same as different muscles in your body. That implies you need to do between 10-16 reps of each activity for 2-3 sets.