You can work your core everyday, there’s no such thing as overworking your core!
There are four parts to your core: internal obliques, external obliques, transverse & rectus abdominal.
Here’s how to do the Torso Twist in order to warm up your abs or even incorporate it as an ab workout:
Position A: lay flat on your back, knees bent into a 90 degree angle, arms weightlessly spread out.
Position B: activate your core and twist your knees to the left, hold and repeat!
Do 30; 3 sets-go!