no i haven't used meal replacement bars or supplements and at this late stage, I don't think i'll be starting. Maybe for my next fight. I feel great about my preparation for this fight but i'm a little concerned that I may feel tired before the fight which starts at 7pm. Pretty much every day since wednesday i've felt like i need a nap in the afternoon, even though i'm sleeping 8 hours a night??? I'd like to not have to nap before the fight, I wanna feel wide awake and alert!!!