In order for cells of the body to receive nutrients from the food that we eat, digestion must be followed by . * 1 point excretion cellular respiration fluid retention . Anaerobic respiration

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.