Chewing the Fat
The title of my PhD thesis is 'Metabolic Flexibility and Endurance Performance'.
The term metabolic flexibility is one that not a lot of people have heard in regards to the fat versus carbohydrate debate.
I’d like to introduce the reader to why you can’t use carbohydrate or fat, you must and always will use both.
As humans, we generate energy from the three macronutrients that make up the foods we eat; fat, carbohydrate and protein.
Fat is the most abundant, and at nine Kcal per gram, fat is the most energy dense.
It is fat that we rely on to store our bodies' excess energy. For this reason, the energy we can get from fat is almost unlimited, even in the leanest athlete.
Carbohydrate is limited in its availability. The average
