Life lies in exercise and rest. Proper exercise, peace of mind, proper exercise, physical and mental health, and a solid foundation can make you physically and mentally healthy.
Health requires exercise. That's right. Regular exercise is to exercise the meridians and make them smooth, which is of great benefit to the internal organs.
Keep your mind calm. Explain more: the heart, not the heart. Refers to the spirit, or refers to the secular desire.
I ching, it is more appropriate to use "empty". Nourish the heart and nature, and peace will clear the heart and not worry about the world.