Billy Dean
ASIN: B00GU617JQ
Publisher: Amazon.com Services LLC
Pages: 23
Learn how to close the gap between your present fitness and your potential fitness by training smart, not by struggling against the effects of aging. This book includes a link to a free calculator for determining the heart rates for zone training. If the link doesn't work in your e-reader, click Calculator to display it in your browser, then save it to a folder of your choice.