This is an exercise from the Tibetan Kum Nye1 yoga. As you lie on your side, you lift arm and leg simultaneously. The movement is actually quite simple. But don’t underestimate this exercise! The real challenge lies in moving the limbs perfectly synchronously. And you may find that surprisingly difficult to do. The key is attention, you’ll need to concentrate well on the exercise. By doing so, you’re training both your attention and coordination skills.