RZ Foster is the author of Human Isokinetics, which is the result of over ten years of research and 40 years of experimentation. He is the author of nine fiction and non-fiction books, primarily on art and translated and published the Tao Te Ching by Lao Tzu.
The one constant in his life has been his interest in fitness, both as a devotee and as researcher. Although approaching eighty, he claims “he is as strong now as he was when he was forty.” He is finishing his second fitness book, “Total Fitness for Seniors,” which will be published in the fall of 2022.