A simple and easy number that is not too wrong is better than an exact number that requires more effort to understand. Statistically, 10K is a pretty good base

A simple and easy number that is not too wrong is better than an exact number that requires more effort to understand. Statistically, 10K is a pretty good baseline. Of course, people have unique physiques, but then again, health advice targeting large populations cannot be individualistic. Pick a number. If it's not too wrong, stick with it until more evidence surfaces.