Sati – mindfulness – is only mentioned once in the Ānāpānasati sutta. ‘Directly feeling and knowing’ – pajānati – is the mode of practice. When we’ve attuned to this, we move to ‘training’. This phase of ānāpānasati begins with training in deeper sensitivity of the entire body.
Sensing the space beyond the skin boundary, and the space felt ‘within’ the body. The two can blend. In this way, they facilitate our experience of breathing.
Wisdom is the know-how faculty that discerns suffering and its end. It knows how the 3 intelligences (verbal, emotional, bodily) can work together to bring about the stilling of saṇkhāras. From it noble knowledge – realization – arises.