Chapter VI Sloka 17

yuKtaharivharSy yuKtceòSy kmRsu, 
yuKtSvßavbaexSy yaegae -vit Ê>oha.

yukt˜h˜ravih˜rasya 
yuktaceÿ÷asya karmasu |
yuktasvapn˜vabodhasya 
yogo bhavati du×khah˜ ( 6|17)||

Yoga becomes the destroyer of pain for him who is moderate in eating and recreation (such as walking, etc.), who is moderate in exertion in actions, who is moderate in sleep and wakefulness.

Commentary: In this verse the Lord prescribes for the student of Yoga, diet, recreation and the like. The student of Yoga should always adopt the happy medium or the middle course. Lord Buddha went to the extremes in the beginning in matters of food, drink, etc. He was very abstemious and became extremely weak. He tortured his body very much. Therefore, he was not able to attain to success in Yoga. Too much of austerity is not necessary for Self-realisation. This is condemned by the Lord in chapter XVII, verses 5 and 6.

Austerity should not mean self-torture. Then it becomes diabolical. The Buddhi Yoga of Krishna is a wise approach to austerity. Some aspirants take asceticism as the goal; it is only the means but not the end. The nervous system is extremely sensitive. It responds even to very slight changes and causes distraction of the mind. It is, therefore, very necessary that you should lead a very regulated and disciplined life and should be moderate in food, sleep and recreation.

Take measured food. Sleep and wake up at the prescribed time. Sleep at 9 or10 p.m. and get up at 3 or 4 a.m. Only then will you attain to success in Yoga which will kill all sorts of pains and sorrows of this life.