THE THINKING, which was in the background of both access concentration and the first jhāna, subsides when one enters the second jhāna and is replaced by inner tranquilitya and unification of mind.b As a practical matter, to move from the first jhāna to the second jhāna, you should take a nice deep breath and let it out slowly and totally, which will calm down the pīti yet leave the sukha strong enough so that you can focus on it.
