It is not an uncommon experience. It is because Sri Aurobindo represents the supreme Knowledge in its deepest, highest sense and in the beginning, the mind is unaccustomed to it and hence, it enters the state of Sushupti, deep Yogic sleep.
The Mother, on the other hand, represents the supreme Power, especially in its aspect of Love; hence the effect is different. With Sri Aurobindo there is supreme security and Peace; hence one sleeps. With the Mother there is Victory and Ananda; hence one is active.
Affectionately,
Alok Da


