The small pause between the in-breath and the out-breath.
Duration: 1 minute.
Feel gravity: let your weight drop into your feet or the seat. Feel your weight being held by the seat or the ground.
Notice the breath as it is. Do not change it.
Notice the end of the inhale: a small moment before the exhale begins.
Notice the end of the exhale too: a small moment before the next inhale comes.
Rest in these small pauses. Do not lengthen them.