Rev6: A Revolution in Motion on Instagram: "This exercise, created by Dr. Edythe Heus, is called the frog rock. Here’s how you do it: 1️⃣ Squat behind the ball 2️⃣ Press your pubic bone into the ball 3️⃣ Drape your body over the ball 4️⃣ With the front of your chin and nose on the ball, let your head dangle 5️⃣ Rock forward, cushioning your fall with your hands, wrists, elbows, shoulders, and shoulder blades 6️⃣ Push back using muscles of the shoulder blades and arms, returning to the…