Stand in a strong but soft Tadasana (Mountain Pose), feet hip-width apart. Ground firmly into all four corners of each foot and create length in your spine, gently drawing your tailbone toward the floor and the top of your head toward the ceiling. Maintaining that sense of length, reach overhead with your left hand and hold under your right ear at the notch just behind your jaw; as your head tilts slightly to the left, make sure you don't tip it back and jut your chin toward the ceiling. Rest your right hand on your right shoulder, fingers pointing toward your neck. Take full, deep, but unforced breaths for a minute, letting your muscles relax and expand into that gentle rise and fall. Then deepen the stretch by gently pulling your head to the left and your right shoulder down, away from the ear. Pull right up to the edge of discomfort, then pause and relax into the stretch for another minute before repeating on the other side.