Well you haven't provided any answer options so answer options include things like mountain climbing. Mountain climbing involves multiple systems and functions over a long period, with moderate being something like hiking the same mountain.
The type of immunity that uses both helper and killer cells is Cellular Immunity. It is used by Cellular immunity to classify the abnormal cells. Once abnormal cells are detected it is destroyed by Cellular Immunity. Cellular Immunity serve as resistance from diseases caused by viruses.
A. Scheduling time can help prevent you from avoiding exercise.
