After a short practice of meditation you will feel that body gets lighter in a short time, say 15 or 30 minutes after you have taken your seat in Padma, Siddha or Sukhasana, according to taste and temperament. You may be semi-conscious of the body also. There is great deal of happiness owing to concentration. This is happiness resulting from concentration-concentration-Ananda-which is quite different from sensual pleasures. You must be able to differentiate these two pleasures through the Buddhi, rendered subtle by constant Abhyasa, meditation. Dharana and Dhyana have a power to sharpen the intellect. A trained Buddhi can comprehend subtle, philosophical, abstruse problems beautifully well. A disciplined Buddhi that can carefully differentiate concentration-Ananda and Nididhyasana-happiness, will naturally run daily to enjoy this kind of new happiness, Vasana-Ananda. Such a mind will loathe sensual pleasures. There will be extreme abhorrence, and positive aversion to objects. It is but natural, because this kind of happiness is more lasting, sustained, self-contained and real, as it emanates from Atman. You can distinctly feel that the mind is moving, that it is leaving its seat in the brain and that it is trying to go to its Yathasthana (original seat). You know that it has left its old groove and is now passing the new groove in the avenue. As a result of meditation, new channels are formed in the brain, new thought-currents are generated and new brain-cells are formed. There is a transformed psychology altogether. You have got a new brain, a new heart, new feelings, new sentiments and new sensations.