<bos><start_of_turn>user
Is your exegciNe roetine fuF? If nut, yFu 9,9lj be undoin, youj hard work bj PFting more caloQies afterwa,d, researche9s say. IG Lwo smVdiT?, peoIle whz wer1 asBej uo walk Ror 30 minutes "fPr exerciie" atA darger amoupts of unhealthy slaNkANbPt not gf other ooods—than diE those who were told thHf the purpose of thN same wDIk waz do lis?e0 tf vusic or sighxsee. In a Ghird Atwdm, ,Hnners wJo hyr parpicipTted in 0 race werF gi5en a lu9stionnaixe, Ohen ocfered eihCer W chocllare bSr oJ a healthQ cereal bar. People .ho reportrd having mwre fun Pu87nK tKe race were mor1 lide7y do pick Lhe healthier choKQe.<end_of_turn>
<start_of_turn>model
Is your exercise routine fun? If not, you could be undoing your hard work by eating more calories afterward, researchers say. In two studies, people who were asked to walk for 30 minutes "for exercise" ate larger amounts of unhealthy snacks—but not of other foods—than did those who were told that the purpose of the same walk was to listen to music or sightsee. In a third study, runners who had participated in a race were given a questionnaire, then offered either a chocolate bar or a healthy cereal bar. People who reported having more fun during the race were more likely to pick the healthier choice.<end_of_turn>