व्यायामं कारयेत् सम्यक् लयतालसमन्वितम् । सौष्ठवे हि प्रयत्नस्तु कार्यो व्यायामसेविभिः ॥ ८९॥
One should properly perform exercises (vyāyāma) in coordination with rhythm (laya) and beat (tāla). Those engaged in such exercises should make efforts to achieve Sauṣṭhava (graceful poise).
english translation