The best health practices are all free

Among all breakfasts, millet porridge is the best,
Among all drinks, plain water is the best,
Among all exercises, tiptoeing is the best,
Among all supplements, happiness is the best,
Among all health methods, eating less is the best,
Among all recovery methods, sleep is the best,
Among all cold and dampness remedies, foot soaking is the best,
Among all digestion methods, walking is the best,
Among all liver-nurturing actions, stretching is the best,
Among all methods to boost yang energy, sunbathing your back is the best.