You didn’t watch the vid ... it was a major part of the vid
Lemme cut to the chase for you Fatty Acids / Triglycerides
Basically if you are the same sex and height that I am we have approx same # of fat cells ... if you are obese and I am not ... your fat cells are fatter than mine. Fatty acids can cross into a Fat Cell where they may or may not be converted into Triglycerides... Triglycerides cannot cross back through (out) of the Fat Cell without converting back to a fatty acid. The Hormone “Insulin” and a few others are the mechanics within the cells that make or regulate or? ... basically the amounts will determine the size of the fat cell.
So a Calorie is a Calorie inside of your body is not correct (although the 1st Law of Thermodynamics is still the 1st Law of Thermodynamics and still correct)
Fuel that cannot be released by a Fat Cell cannot be burnt/used therefore you can starve to death and still be measurably obese. (What was interesting is that this ability/inability of the Fat cells is normal in some respects, is sex determinant (where and how) and can manifest in some very weird ways)
Watch the vid, it was very good, worth the time, I was interrupted a few times while watching it but I did get the gist so I will probably watch it again for the parts I missed.