Final answer:
The double leg stretch exercise works the abs by lifting the legs and arms off the ground while keeping the shoulders lifted. It targets the abdominal muscles and helps stabilize and flex the spine.
Step-by-step explanation:
The double leg stretch is an exercise that targets the abdominal muscles. It involves lying on your back and simultaneously lifting both your legs and arms off the ground. During this exercise, the shoulders stay lifted off the mat.
The primary muscles used in the double leg stretch are the abdominals, specifically the rectus abdominis, transverse abdominis, and obliques. These muscles work together to stabilize and flex the spine.
By keeping the shoulders lifted during the exercise, you engage the core muscles even more and increase the challenge for your abs.