offwidth
Level 10 Valued Member
Well.... 220-age is the 'time-honoured' formula. But that's really only statistically accurate over very large populations. (And even that might be a stretch...)That is 220-age, right? Sorry, brain flatulation......
The only way to arrive at an accurate HRMax is to measure it.
Now, that being said... most of us probably don't need to be dead nuts accurate with this unless we are chasing gold...