The beauty of a StairMaster workout is it's low impact (read: easy on the joints) but highly effective at building the musculature of the legs since gravity is working against you as you climb.

Seeking revenge on Tarzan, Clayton's sister (or rather her valet, Hobson) kidnaps Jane, Tantor, Terk, and the Professor, placing each in a separate, deadly peril. She then injects Tarzan with a fatal ...