Hope you can help. About a year ago someone posted a link to a fantastic YouTube video about metabolism. It had an overweight woman and a slim woman (friends), who apparently ate the same diet yet the fat one couldn't understand why she was so much bigger. They also did some tests on the larger woman, how much she was…
I was just wondering if anybody has any understanding of this feature and how accurate/inaccurate it is? Mine seems to be directly related to the fluctuations in my resting heart rate, which can vary by 10 bpm either way!
