tag:blogger.com,1999:blog-7754605080106257288.post750153729055514423..comments2023-03-24T01:01:03.821-04:00Comments on Lifting my butt and other stuff: and I thought yesterday's session was toughUnknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-7754605080106257288.post-32099434090359197002012-01-02T20:13:37.834-05:002012-01-02T20:13:37.834-05:00The heart rate zone calculators are for people doi...The heart rate zone calculators are for people doing long slow steady stuff, ie beginners.<br /><br />If you already have a base of decent fitness, you can as you been doing do intervals, where the heart rate will rise above that zone for the "work" period, and drop back into it for the "rest" period.Hanley Tuckshttps://www.blogger.com/profile/13047638048463160737noreply@blogger.com