Noadswood Science, 2012. BER & BMI. BER & BMI. To understand the terms BER and BMI. Energy. Where do we get our energy from, and what do we use it for? Our energy is derived from food - whereas plants can produce their own energy from sunlight, we must consume food
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Body builder - very high BMI (although this is overwhelmingly muscle, not fat)
Elite marathon runner – very low BMI (very healthy diet, just so many calories constantly burnt running (~1000 per hour))
BER (kJ) = Weight (kg) x 5.4
E.g. 80kg man would have a BER of 432kJ per hour
BER of 10’368kJ per day (or 2476 calories)
* 1kJ = 0.24 calories