BMI fun with HRT

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Have a hrt? How acurate is the bmi calculator on here?

I started mine when I went to sleep last night,
divided that number by minutes slept,
multiplied that by 720 (minutes in 12 hrs)
and times that by two.

My actual is 1609 and the bmi calculator on here says 1618...pretty close.

How about yours?

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