Take every opportunity to lie on your front if you work at a desk. Go to the park at lunchtime and lie with legs hip-width apart. Bend your arms and rest your forehead on your hands. If you can, let your heels flop inward. Consciously release tension in the lower back. Imagine the pelvic area becoming warm, heavy, and sinking into soft sand, aches and pains dissolving. Feel your breath in your belly, pressing against the support of the ground.