Peter Attia· MD
the thing that's awesome about fat is first of all it's a very concentrated source of energy right like dietary fat is nine calories per gram carbohydrate is four protein is four yeah it's anhydrous there's no water it's exactly literally just pure energy that was the second thing i was gonna say is that it's hydrophobic and so you can store it without having to hydrate it like you do with glycogen glycogen the weight of glycogen i think is mostly water three three or four to one water okay there we go and then the weight of adipose tissue even if you include all the interstitial stuff and all that i think it's like 85 90 percent pure fat so the energy density is just off the charts depending on you know relative to any other storage method that the body has