Biorhythmic toothpaste subscription model. Founded on the principle that health care products should cater to your body but also synchronize with the biological sleep and wake cycles that we experience every day. In a single year, you spend 24 hours brushing your teeth. Those four minutes per day are often a time of daydreaming; but can also be used to center yourself, to become aware of your thoughts, or to transition into a new state of mind.