ageagingbadbalancebetabetterbiologicalbraincellsceocleardandanieldaviddietdimdrenergyenhancementexercisefatfitnessflavonoidsgoalsgoodguestgutguyenethealthhearthelphelpshydroxybutyrateimmunityimpactimprovejamesjamiejeffjetjohnkapahikeepkeithkellyketonelaglightlossmakemassmdmemorymentalmetabolismmichaelmicrobiomemikemitochondrialmusclemysteriousnutritionoptimizingpaleopankajpaulperformancephphdprobioticsprofessorproteinreduceresearchrolerothschildsenescentsiegelsleepsocialstandingstephansunlightususingweightwinesworkworldyouthfulzeitzer