Observe how the flowing sand slowly forms a landscape map, as if you were in the mountains, rivers, stars, and the sea. Your breathing rate slows down, the whole world becomes quiet, which can relieve stress, relax your eyes, and promote patience. How to adjust the bubbles: 1 If the sand falls too slowly, there may be too many air bubbles in the hourglass. Use a syringe to remove some air bubbles through the air inlet hole until the sand flows at the desired speed.
