Challenge your abs, obliques and lower back with these core strengthening exercises. A thorough core workout routine designed to transform your midsection. http://www.spotebi.com/workout-routines/core-strengthening-exercises-abs-obliques-lower-back/
No-Equipment Ab Exercises Chart - Bodyweight exercises always recruit more than one muscle group for each exercise so it is impossible to isolate and work one muscle group specifically by doing one type of exercise. It is however possible to increase the load targeting specific muscle groups with specific exercises so that they respond the most to the challenge. The following chart helps you find the exercise that helps focus more on specific abdominal muscle groups for best results.