How to do: Frog Sit-Ups

Step-by-step instructions

1. 1Lie with your back flat on the floor (or exercise mat) and your legs extended in front of you.
2. 2Now bend at the knees and place your outer thighs by the floor (or mat) as you make the soles of your feet touch each other.
3. 3Now try pushing both soles and bringing them up as near you as possible while you keep the outer thighs on the floor (or at least almost touching it). Tip: In this position your legs should create a diamond shape.
4. 4Now, cross your arms in front of you by touching the opposite shoulders. This will be your starting position.
5. 5As you exhale flatten your lower back to the floor while curling the torso upwards. Tip: This will be like performing the first 1/4 movement of a sit up. Hold at the top position for a second.
6. 6As you inhale, slowly lower back to the starting position.
7. 7Repeat for the recommended amount of repetitions.

Photos & base instructions from the open-source Free Exercise DB (public domain).