Ladder yog ib hom khoom siv dag zog sab nraum zoov, uas feem ntau tshwm sim hauv tsev kawm ntawv, chaw ua si, thaj chaw nyob, thiab lwm yam; Cov kev faib tawm feem ntau suav nrog zigzag ntaiv, C-hom ntaiv, S-hom ntaiv thiab tes nce ntaiv. Cov neeg nyiam cov khoom siv sab nraum zoov zoo li no, tsis yog vim nws cov duab tshwj xeeb, tab sis kuj vim nws cov txiaj ntsig zoo kawg nkaus. Txawm hais tias qhov hloov pauv yog dab tsi, tus ntaiv tuaj yeem siv lub zog ntawm cov leeg ntawm sab sauv thiab txhim kho lub peev xwm tuav ntawm ob txhais tes. Ntxiv mus, yog tias cov cuab yeej siv no feem ntau siv, lub dab teg, lub luj tshib, lub xub pwg thiab lwm yam pob qij txha kuj tuaj yeem hloov tau yooj yim dua. Ntxiv mus, qhov sib txawv ntawm tus ntaiv tuaj yeem txhim kho kev sib koom tes ntawm tib neeg lub cev. Cov pej xeem tuaj yeem siv tus ntaiv kom haum.
Kev siv cov raj square ua rau cov cuab yeej muaj zog, zoo nkauj thiab ruaj khov, thiab tuaj yeem tiv taus qhov hnyav dua.
Muaj nuj nqi:
1. Ua kom cov ntshav ncig ntawm lub cev thiab txhawb cov metabolism;
2. Txhim kho lub zog ntawm cov ceg tawv sab sauv thiab qhov yooj yim ntawm lub duav thiab lub plab, txhim kho lub peev xwm ntawm lub xub pwg pob qij txha, thiab kev tawm dag zog sib npaug thiab kev sib koom tes.
3. Electrostatic txau txheej txheem yog saws rau ci xim.
4. Kev xaiv cov cushion thiab txee xim yog dawb, thiab koj tuaj yeem xaiv cov xim sib txawv.