Cardio and BMI

When I run I use my Apple watch. This gives me (in the Health app) an estimate of my V02Max. Supposedly it is accurate and my number is usually around 44.7. 

I wanted a second opinion so I went to our YMCA which Egym machines which are pretty fun machines for weight lifting etc.  They give results on a variety of measurement. I finally managed to do their cardio test which is treadmill running to exhaustion (it took me 16 minutes tp get to 163 bpm. Note, supposed max BPM is 155bpm).

Apparently, I have the flexibilty of a 63 year old, the strength of a 34 year old, the cardio of a 28 year old and the metabolism of a 69 year old (thanks to the archaic BMI tests!),

Now I just need to grow 4 inches taller to fix the BMI problem

I decided to fix the stupid BMI measurement by looking at the BMR (Basal Metabolic Rate). There are two ways to estimate this.

 BMR = 10W + 6.25H - 5A + 5

 BMRF = 370 + 21.6(1 - F)W

Where H = height = 165cms tall (5’ 5”), W = weight = 77kg (170 lbs), A = age = 67 years old and F = body Fat which you allegedly can get from the stupid BMI via

For men, F = (1.20 x BMI) + (0.23 x Age) – 16.2, while for women, F = (1.20 x BMI) + (0.23 x Age) – 5.4.

Also, BMI = W/H*H

So my BMI = 28.3%

and hence my F = 33%

So my BMR = 1,476 cal/day and my BMRF = 1,487 cal day

However, 4 years ago dexascan measured my body fat at 23%. I tried 3 body fat calculators (which use waist, neck, arm measurements as well as age, height, weight) give my body fat = 25%. So this  puts my BMRF = 1617 cal/day