ageagingbadbalancebetabetterbiologicalbloodbraincellsceocleardandanieldaviddietdimenergyenhancementexercisefatfitnessflavonoidsgoalsgoodgutguyenethealthhearthelphelpshydroxybutyrateimmunityimpactimprovejamesjamiejeffjetjohnkapahikeepkeithkellyketonelaglifespanlightlongevitylossmakemassmdmemorymentalmichaelmicrobiomemikemitochondrialmusclemysteriousnutritionoptimizingpaleopankajpaulperformancephdprobioticsprofessorproteinreduceresearchrolerothschildsenescentsiegelsleepsocialstandingstephansunlightususingweightwinesworkworldyouthfulzeitzer