I mentioned this video to my wife, who is a registered dietitian and a PhD in nutrition science (the RD / PhD combo is relatively rare). She said, "Yeah, I'm u

I mentioned this video to my wife, who is a registered dietitian and a PhD in nutrition science (the RD / PhD combo is relatively rare). She said, "Yeah, I'm uncomfortable just saying 'calories in / calories out' because human metabolism is just way more complicated than that." She's interested in watching the whole video herself; I'll post her thoughts if she does.