Qej thiab dos yog cov khoom noj tamasic thiab rajasic, uas txhais tau hais tias lawv yog caustic nyob rau hauv cov xwm, ua rau kom cov kua tsib thiab hluav taws nyob rau hauv lub cev. Cov tshuaj Indian ib txwm qhia kom tsis txhob noj cov dos thiab qej, uas ua rau muaj kev ua phem, tsis paub, npau taws, ua rau muaj kev xav ntau dhau, nrog rau kev qaug zog, tsis muaj zog lossis muaj kev sib deev muaj siab. Hauv Ayurveda, ob qho zaub no suav hais tias tsis yog zaub mov, tab sis ua tshuaj. Yog li, lawv ntxiv rau cov khoom noj txhua hnub tsis suav nrog. Nws tseem tsim nyog sau cia tias lawv yog qhov tsis zoo rau cov neeg ntawm Pitta txoj cai lij choj thiab rau cov neeg uas muaj qhov dosha no tsis txaus ntseeg. Cov xibhwb thiab Taoist meditation cov kws kho mob kuj tau siv qej thiab dos kom ntau dua vim tias lawv muaj peev xwm txhawb kev xav ntawm kev mob siab rau thiab kev ntshaw. Ib txoj kev tshawb fawb ntiag tug los ntawm Stanford University pom tias qej yog tshuaj lom uas hla cov hlab ntsha-hlwb barrier. Muaj ib qho desynchronization ntawm lub hlwb tsis muaj zog, uas ua rau txo qis hauv cov tshuaj tiv thaiv lub sijhawm. Qhov tseeb nthuav: raws li kev nco txog ntawm tus kws ua haujlwm, cov kws tsav dav hlau tau hais kom tsis txhob noj qej tsawg kawg 72 teev ua ntej tawm mus. Devout Hindus feem ntau zam cov dos thiab qej ua zaub mov tsis haum rau Tswv Krishna. Hauv Garuda Purana, cov ntawv dawb ceev ntawm Hinduism, muaj cov kab hauv qab no: (Garuda Purana 1.96.72) Uas txhais tau tias:
Chandrayana yog ib yam tshwj xeeb ntawm penance ntawm cov Hindus, uas muaj nyob rau hauv ib tug maj mam txo nyob rau hauv cov zaub mov noj los ntawm penitent los ntawm ib tug noj txhua hnub, nyob rau hauv kev twb kev txuas nrog lub waning ntawm lub hli. Cov zaub mov noj maj mam nce ntxiv thaum lub hli lengthens. Aphrodisiac cov khoom tau raug ntaus nqi rau dos txij li lub sijhawm prehistoric. Nws tau hais nyob rau hauv ntau phau ntawv Hindu classical ntawm kev kos duab ntawm kev hlub. Dos tau dav siv los ua cov tshuaj aphrodisiac hauv tebchaws Greece thaum ub, nrog rau cov zaub mov txawv ntawm Arabic thiab Roman. Hauv Bhagavad Gita (17.9) Krishna hais tias: