▁fails ▁to ▁submit ▁to ▁the ▁bit , ▁and ▁increases ▁the ▁effect ▁of ▁this ▁pressure . ▁ ▁Western ▁designs ▁In ▁western ▁r iding , ▁nose b ands ▁are ▁not ▁generally ▁worn ▁with ▁an ▁ordinary ▁working ▁brid le . ▁N ose b ands ▁attached ▁to ▁the ▁che ek pie ces ▁of ▁the ▁brid le , ▁used ▁purely ▁for ▁decor ative ▁purposes , ▁were ▁popular ▁during ▁the ▁ 1 9 5 0 s ▁and ▁in ▁many ▁western ▁mov ies , ▁but ▁are ▁not ▁common ▁today . ▁When ▁nose b ands ▁are ▁used ▁with ▁western ▁equipment , ▁they ▁usually ▁fall ▁into ▁one ▁of ▁three ▁categories : ▁A ▁relatively ▁strong ▁nose band , ▁often ▁on ▁its ▁own ▁head st all , ▁may ▁be ▁worn ▁for ▁the ▁purpose ▁of ▁supporting ▁a ▁standing ▁mart ing ale ▁or ▁tied own . ▁It ▁is ▁generally ▁adjust ed ▁to ▁lie ▁just ▁below ▁the ▁che ek b ones , ▁but ▁is ▁adjust ed ▁lo os ely ▁or ▁may ▁not ▁be ▁adjust able . ▁ ▁It ▁does ▁not ▁keep ▁the ▁horse ' s ▁mouth ▁shut , ▁it ▁only ▁supports ▁the ▁tied own . ▁N ose b ands ▁are ▁used ▁in ▁training . ▁ ▁Some ▁young ▁horses ▁are ▁started ▁in ▁a ▁hack am ore ▁that ▁includes ▁a ▁special ized ▁design ▁of ▁ra wh ide ▁nose band ▁called ▁a ▁bos al , ▁to ▁which ▁re ins ▁are ▁attached . ▁ ▁As ▁a ▁trained ▁hack am ore ▁horse ▁adv ances ▁into ▁a ▁bit , ▁a ▁light weight ▁bos al , ▁sometimes ▁called ▁a ▁" pen cil ▁bos al