Also in Chapter 6 Krishna tells us: ‘Yoga is not for the man who overeats, or for him who fasts excessively. It is not for him who sleeps too much, or for the keeper of exaggerated vigils. Let a man be moderate in his eating and his recreation, moderately active, moderate in sleep and in wakefulness. He will find that yoga takes away all his unhappiness.’
Yoga practice brings us into balance and we find the line of contentment. Sometimes we rise above this line to happiness and joy. Sometimes we sink below this line to depression and sadness. But we always return to the line of contentment. The more this becomes a habit, the longer we stay on that line of contentment, the more ‘yoga takes away all our unhappiness’.