Sandbag Swings Oblique Double Crunches Clean and Press Burpees Tricep Dip Kick Ups Around the World Squats Push up with Reptile Knee Tucks Sandbag Sit ups Roll Back Burpees (robinskey.com)
Some people also refer to this exercise as double crunches because you crunch with both your lower body and your upper body. (ab-core-and-stomach-exercises.com)
Get Ripped Six Pack Abs by doing Double Crunch. (popworkouts.com)