Lie on your back, and open your legs into a diamond shape (aka butterfly legs) with the soles of your feet pressed together and knees out wide. Extend your
Diamond Sit Ups
Joanna Aiello, CPT
Rogue Donkey Rogue Fitness
10 Sit-Up Variations (From Easiest to Hardest) - Steel Supplements
V-Ups, What Are They? Muscles Worked? Benefits?
Crossfit Bodyweight WODs
Exercise Technique A-Z: Diamond Sit-Ups
How To Max the Sit-ups On The APFT
What exercises can I do at home to build muscle? - Quora
Sit-Ups Benefits: Exercises, Variations, and More