3 Plank Exercises for Tight, Flat Abs Posted on 18/07/2017 By admin Reply How to Do a Plank, Plus 3 Plank Exercises for Tight, Flat Abs Posted under: Exercise and ObeistyTagged as: Role of exercise in management of obesity in adults About admin I am working in medical field since January 1980 in different positions from clinic in charge to manager of health section with different national and international organizations in Afghanistan and Pakistan. View all posts by admin →