You're Not Going to Get Fit Without Your Hort Rate Going Up

Your hart rate is a particular beat per minute in the grand scheme of things. It doesn't really mean what some individuals or entities would want you to think that it means. So again, you're not going to get fit without your hort rate going up. And people are blindly following this asi as if it is a law, without really knowing where did it come from,. What was its origins? Was it meant to drive athleticism forward or not?