The equation for target heart rate is: 210 minus your age. It's a standard that has been around for as long as I can remember. Keep in mind, though, that if you are taking a beta-blocker you cannot attain this rate because of the effects of the medication.

Good Luck,

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)