There's a reason why you either love or hate a rollercoasterTo play this video you need to enable JavaScript in your browser.This video can not be playedThere's a reason why you either love or hate a rollercoasterCloseWatch the full episode on BBC iPlayer.SubsectionHealthPublished23 AprilShareclose panelShare pageCopy linkAbout sharingRelated topicsPsychologyFollow Psychologyclose panelYou are now following PsychologyUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description