This approach demands knowledge of and research into BAN applications. Examples include long-term heart monitoring to help prevent cardiovascular disease, and measuring brain function to track conditions such as epilepsy, Parkinson's disease and Alzheimer's. Stress monitoring could help prevent burn-out and aid the treatment of post traumatic stress disorder (PTSD) sufferers. Beyond healthcare, possible applications include physical activity monitoring, bio-feedback to promote relaxation and even entertainment systems.