10 min Flat Stomach/Abs Workout using variations of the plank: 10 minute/7 moves to sculpt strong core muscles for a sexy and toned abs in no time. Works not only the rectus abdominus muscle group, but also the transverse abdominus muscles, internal and external obliques, hips, and back! And then when youre too tired to think you have to absolutely must watch Cooking With Geoff