
Originally Posted by
gbrice75
Our bodies do use fat stores for energy as, after all, that's it's purpose as you pointed out. Generally, our bodies use energy in the following order - understand that this is simplified and not 100% accurate, but for the most part - circulating glucose, glycogen stores, dietary and body fat, converted amino's from broken down muscle tissue (gluconeogenesis). However, this isn't always true. Take HIIT cardio for instance. That style of cardio requires 'fast' energy - glucose/glycogen is definitely it's number 1 target, but unfortunately the process of mobilizing and utilizing fatty acids for energy is slower and often, LBM is targeted along side it as a compensatory measure.