Answer this question to the best of your ability:
How do practitioners progress to access concentration in stage 6 of breath meditation?
In stage 6 of breath meditation, practitioners wait for the pleasant physical sensation of bliss/piti and then let go of their focus on the breath entirely, allowing their attention to rest in a peripheral awareness. This enables them to fully experience the happy emotions (sukha) that arise as they access deeper states of concentration. Practitioners stay in this state for as long as the feelings of bliss and happiness persist.