जेब्ला बियाम खालामनायनि समाव मैखुन मोदोम गेहेनफोरनि नारसेबनाय आरो जिरायनाया गोख्रों जायो , बेफोर मोदोम गेहेनफोरा बियामखालामजायो आरो गोख्रोंसिन जायो ।
As the contraction and relaxation of the heart muscles is vigorous during exercise these muscles are exercised and become stronger .