Iron and Digestion. Digestion changes are a common side effect of iron supplements. The iron is absorbed into the system soon after ingestion and should be taken with a glass of juice that is high in vitamin C to aid absorption. Monitor the color and consistency of your stool for any change.
Definition of chi : vital energy that is held to animate the body internally and is of central importance in some Eastern systems of medical treatment (such as acupuncture) and of exercise or self-defense (such as tai chi)
Back to the topic. The term itself is very obscure, and it is accepted as a physical or mental energy used to help focus other energies, or some other similar explanations of similar origin. The truth is nobody knows what Ki is. but the general meaning is energy or spirit. Ki means  life force or life essence. It depends on the specific KI you are talking about. it can mean Tree æ¨. it can mean Spirit or mood or Disposition æ°.