简介：Weallhaveabiologicalclocktickingawayinsideusthatgovernsourdailyrhythms.Thisaffectsourhealthasmuchasourdietandwhetherweexercise.Sowhatcanwedotomanagethisinternalclockbetter?Tofindout,evolutionarybiologistEllaAl-ShamahilocksformercommandoAldoKaneinanabandonednuclearbunkerwithnowayoftellingthetime-fortendays.Monitoredaroundtheclockbyateamofscientists,hecarriesoutabarrageofteststouncoverexactlywhatmakesourbodyclocktick.Aboveground,Ellameetstwotime-starvedcouplestotestthelatestthinkingonhowwecanmanageourbodyclocksbetter.Intryingtoimprovetheirsleep,andtheirlives,sheuncoverspracticaladvicethatwecanalltakeonboard.Studiesonshiftworkersshowthatregularlydisruptingoursleepmakesusmoreatriskofdiabetes,heartdiseaseandevencancer.Sogettingtogripswithourbiologicalclockcouldn'tbemoreimportant.