→ The zones mini guide is the same/similar nutrition section from ENDURE or HYBRID, merged with some extra info on macros & daily nutrition from my retired ebook FUEL, not in ENDURE or HYBRID for those who ONLY want this info.
→ Individuals who run or plan on running should purchase ENDURE as the training information will be more specific.
→ Individuals who hybrid train or plan on hybrid training should purchase HYBRID as the nutrition information will be more specific.
→ You do not need to purchase both; if you own ENDURE or HYBRID, do not also purchase this! This will be helpful if you own FUEL but still want the intra-workout nutrition info.