Sun Simiao advocates "Twelve Less" in health care: think less, think less, do less, talk less, laugh less, worry less, be happy less, be angry less, be good less and be evil less.

There are also "twelve excesses" in Sun Simiao's health preservation: thinking too much leads to mental depression, thinking too much leads to disorientation, laughing too much leads to confusion, talking too much leads to exhaustion, thinking too much leads to obsession, ignoring too much leads to concentration, being angry leads to depression, feeling too much leads to irritability, and being evil leads to exhaustion.