Try this: Play dead

If you want to feel more grounded, spend time lying on the ground. In yoga, corpse pose (also known as savasana) is a resting supine pose done at the end of a yoga session to help calm and center the body and mind.
When you lie flat on your back, your posture becomes open and relaxed, which can have a calming effect,” says Dr. Julia Loewenthal, a geriatrician and certified yoga teacher with Harvard-affiliated Brigham and Women’s Hospital.