Ba khotiri ahamiyati khob ba inson chand nozukihoi khobkuniro menavisem. Avvalo gizoro 2-3 soat pesh az khob tanovul karda vaqti shom gizoi vazninu derhazm nakhurdan ast. Bo shikami gurusna khobidan niz zarar dopgga, shom nushidani nushokii ziyod va ham ba umedi intizorii subh berun nakardani fazlaho niz zarari bisyor dorad. Dar vaqgi khobidan avval kame ba rost, bad ba chap, akhiran ru ba bolo karda khobid, vale behtarin khob ba rostu, bad ru ba bolo buda badtarinash bo shikam va ham bo dasti chap meboshad. Dar vaqti khob ba zeri sar bolipggi na onqadar baland monda khobidan muvofiqi omili salomaty ast.
Agar pesh az khob gizoi dushvorhazm khurdedu rohi hazmi onro nayofted, aqalan bolini saratonro boz balandtar karda bad khob kuned. Badtarin khob sar va yo poyro sui sharq va garb(qibla) monda khobidan buda behtarin tarzi khob sar yo poyro sui janubu shimol gardonida khobidan ast. Va az hama khobi badtarin va zararovarrandatarin ba shakhs in khobi badi peshin ast, ki metavonad shakhsro hatto giriftori bemorii ruhi namoyad. Dar havoi kame sard khoh ruzona va hoh shabona be ruypush khobidan boisi bemorihoi sardy megardad. Dar havoi garmi oftoby khobidan niz zarar doshta, baraks shabona dar zeri partavi moh khobidan ahamiyati kalon dorad.
Talabothoi asosii khobi bofarogat metavon dar chand jumla jambast kard, ki chuninad:
1. Dar yak vaqti muayyan boyad khob kardan.
2. Rejai khobu bedoriro rioya kardan.
3. Ba khastagii jismony va yo aqly roh nadodan.
4. SHabona to der kor nakardan.
5. Pesh az khob dar havoi toza sayru gasht kardan.
6. Na kamtar az 1,5-2 soat pesh az khob shom khurdan.
7. Dar shom khurdani gizoi sabuku nagz halshavanda.
8. SHustani dandonho pesh az khob.
9. Dush kardan bo obi shirgarm pesh az khob.
10. Dar jogakhi sakhtiyu narmiash mutadil khob kardan.
11. Fortochkahoi khonai khobro kushoda khob kardan.
Qayd. Soli 1840 CHarlz Dikkens hangomi sayohat ba Amriko, divani khobkuniro tavre guzosht, ki sarash ba shimol boshad, inro u bo kompas aniq namuda bud. Az rui qonuni quvvahoi magnitsh zamin.