Bhagavad Gita 6.17

For one measured in food and movement, measured in work, measured in sleep and waking — yoga becomes the destroyer of sorrow.

युक्ताहारविहारस्य युक्तचेष्टस्य कर्मसु ।
युक्तस्वप्नावबोधस्य योगो भवति दुःखहा ॥

yuktahara-viharasya yukta-cestasya karmasu | yukta-svapnavabodhasya yogo bhavati duhkha-ha ||

For one measured in food and movement, measured in work, measured in sleep and waking — yoga becomes the destroyer of sorrow.

Gita yoga psychology is a dose. Too little or too much practice is not more holy. Balanced sleep, food and daily routine are the heart of this verse.