Sadhguru speaks about vital food inputs:

Honey

Consuming honey will bring a certain balance to the circulatory system which is very essential for a yoga practitioner. Because you are pushing the body in certain ways, it is important that your blood chemistry is in a good place so that the body doesn’t have to make any absurd changes to adjust to the chemical disproportion. Keeping the blood pure and the chemistry in a certain balance will definitely happen with regular consumption of honey. It is very necessary for someone who practices yoga.

Turmeric

Turmeric also does similar things: it purifies the blood and brings a translucence to your energies. Turmeric is one substance which not only works on the physiology, it also has a very big impact on your energy system. It creates a purification process in the blood, body and energy system. You can use it as a purificatory even from outside. If you just take a small pinch of turmeric, put it into a bucket full of water and pour it over your body, you will see the body will be vibrant. When people look at you, it looks like you are glowing.

Neem

Neem is a very unique tree. A neem leaf has over 150 different kinds or formats of chemistry. It is the most complex leaf that you can find on the planet and it has particular benefits in opening up the system. In India, if you have psychological problems, they “thrash” you with neem leaves. If you have a toothache, we use a smaller stick. If you catch very bad infections, we put you on neem leaf. If you want to prevent cancer, we put neem paste into you. Above all, it generates heat in the body. Generation of heat in the body is supportive for generating intense forms of energy within the system.

Kollu

Horse gram is one of the most protein-rich lentils found on the planet. It is very high-powered. Horse gram also helps with ushna and generates a tremendous amount of samath prana, increasing heat in the body. In English, ushna translates as heat, and sheeta translates as cold or cooling. But that is not an appropriate translation. Suppose you are in a state of ushna, the body feels very hot. But if you measure your temperature with a thermometer, it will read normal. However, in your experience the body feels hot. That means you are in a state of ushna.  For a hata yogi, it is particularly important to stay slightly oriented towards ushna because if you are on the colder side, you become prone to injuries.

Source Link :  http://blog.ishafoundation.org/yoga-meditation/demystifying-yoga/the-making-of-a-hata-yogi-eating-right/