Universitystudentsarealllivingintheschoolhostels.Withoutthemonitoringofparents,itisveryeasyforthemtolearnbadhabits.Forinstance,universitystudentsalwayssleeplateatnight.Someofthemevensleepinthedaysoastoplaygamesorhavefunoutsideatlatenight.Sleepinglateisnotgoodforthehealthofyoungadults.Onemayeasilygettiredandsickwithoutenoughsleepandaregularbiologicalclock.

　　Playingvideogamesisanotherissue.Astheschoolworkinuniversitymaynotbeasheavyastheoneinhighschool,studentshavemoresparetimethanbefore.Itisokayforthemtospendsometimeplayingcomputergames.Howevergettingaddictedtocomputergamesismoreseriousthantheythink.Students,addictedtocomputergamesoftenspendtheirstudytimeongames.Asaresult,theymayfailtheirexamsandgetsuspendedbytheirschool.

　　Itisnevertoolatetolearnfromthemistakes.Ifonehastheabovebadhabits,hecanalwayschoosetomakeafreshstart.Hecanpushoffthenightclubsandcancelalltheplansatnight.Itmaynotbeeasytogetridofcomputergames,butonecanalwaystrytoreducehisgamingtime,untilthedayhecantotallystopplaying.Onecanalsotrytocultivateagoodhobbylikesports,readingandothermeanfulactivities,sothathecanlearnandhavefunatthesametime.

　　原创~放心使用

　　希望能帮到你~

　　开头和结尾两段不错，中间3个危害说的不怎么清晰，没有一条一条列出来，不过还是很感谢了。

　　你的要求不是只有睡觉晚打游戏两点么》？睡觉晚在第一段，打游戏在第二段。。。没有问题的话请采纳

　　你误解我的意思了，我的意思是随便写一个坏的习惯，比如睡觉晚、打游戏等。中间一段是写这个坏习惯的三个害处。