Life Lines is a general interest science podcast of The American Physiological Society dedicated to conveying the "phizz" in physiology. Physiology is the study of how the body works, from all the body's major systems and functions to the molecules and cells that work in such remarkable ways to keep us healthy. Each episode includes three segments: an interview with the author of a recent physiological study; an answer to a question about how the body works; and, a feature interview with a physiologist about his or her work. If you would like a summary of the recent physiological studies featured on the program, please visit www.lifelines.tv. To ask Life Lines a question about physiology please skype "Physcast" or call 301-637-5634.