12045 jow09 02

THE JOmETT IJłSTITOTE OF PHYSICAL CULTURE

TiS 2TT SY3TEM O? KSALTH A*® BODY BUILDUłG.

CHEBT IWSR.

Va X ocplnlnwd to you whca talidag ao broathing, tho ohoat la tho troaaurc o hańbo r cf li A;. »7lthln lt la contalned all o f your o rannie and phyalcal powor whloh onabloo you at all tlnu* to conbat tho inroada of phyalcal woatocao'.

A poworAilly aąunrtd ehoct noana that you harc a good baek. Thoso two do-ilrablea nlwaya go hond io haad. If your ahouldcra aro atoonod, lt la a ton to ono chaneo that your choat la earod ln, and If your ahouldor bladca aro ntiofciog out lito aproutln- wlaga, it taeana that your lowor rib boa la ooatracting on you.

Tho cor. ton ta of your ohoat arc protootod by twliro mira of riba that aro ćiridcd na foliowa. The flrat aorta gaira aro faator.od fron your aplno to your broaat bonu by tholr own inćivtdual cartllago. Thla la a grlaly pioco of flcah that ewmcota bono wtth bono ln thla onao. tbuao rlba aro Jenowa as tho truo rlba bocauao of thie nartioular dlatlnotloa ovor tho roat.

Tł.o Bth, 9th, ar.d lOth rlba aro teraod Uu> fhlao rlba bcoauao thoy aro at-taohod to the lowor oztrenity of your broaat bona by a cartllaglnoua part. Thoy gira to your lowor ohoat that cwocplng offect aoan ao eonaplououaly whon you dra* your o tonach ln, carkinf. tho iiridlcj lino betwoon your chcat and your abdeaen, fona-toc the *pacc knewn ao tho thoraolc aroh. Tho ronalning taro pcHr of rlba arc teraod tho floatinf rlba and havo tholr orlgln on tho opina, but no inaortlon. łhoy lio wlthin tho nucoular flank of tho aIdo*

n© gonorally apoak of tho broaat tono aa tho a ternu* bono whloh no ona tho frontal bono or tho otrong bonu. Thla bono la la throo aogaontaj only two of thoao acjmonta nr* ęf ony laportancc, tho thlrd la ao umil lt ha a little to do ln the part of tho ohoat a c herc. The flrat part Jo Ina the aooond port about tho lino of the areemd rib. You *111 rocognlec thla f*om our forsor talk ln tho loaaon roadlng "Tho Hroath of Llfb," aa the olarleular rrgion* Thla broak ln tho ohoat aohano allown for choat moYoaoBta of inaplration, or upllft* Tho aocond aoetlon oontrola the Intor-eoatal roglor. whoro tłv. major part of ohoat czpanalon taJccs plaoo.

Thls oorora ohoat upllft and dlroot czpanaloaj nerw lot ua aoe wbat tho fhlao rlbe do.

Duo to tho pocullar lnaortloa of thu throo fhlew rlba thoy aro girun ar. la* portuit ttozibility. Thla cnabloa thon to aot lito bollcnra and to porfbrn the nOor port of ohoat contractlon. Thla aroa la tho dlaphngn, and eo 1 Lnfcnaod you boforo, tho aoat ncgluotod part of tho arorago ran*a ohoat. You nay hardly bolloro lt, but it actually la the seat noglcctod part of the arorage ozorclao ftm*a mato-up. Itiw 'er.cm henr to dirrolop thla aoetlon eorruetly and aafoly.