Andrew Huberman· PhD
there are many factors that impact that calories burned part of the equation. Some of those are obvious. So, for instance, amount of exercise, type of exercise, basil metabolic rate, how much energy one burns just sitting there. I've talked before on this podcast about NEAT, non-ex exercise induced thermogenesis, where if people bounce around a lot and fidget a lot, they can burn anywhere from 800 to 2,000 calories per day. So, their quote unquote basil metabolic rate is actually much higher simply because they're fidgeters, whereas people who tend to be more stationary have a lower basil metabolic rate on average. There's great science to support this. Metabolic factors and hormones are also very important. hormones such as thyroid hormone and insulin and growth hormone and the sex storage hormones testosterone and estrogen those levels will also profoundly influence the calories out the calories burned component of the calories in calories out equation.