The tenderness practice instructions during the meditation is a form of metta and compassion practice. It's one that helps ease the nervous system, hold difficulty and stress with care, and cultivates a kind attitude towards our mindfulness practice.
Following the talk on the 5 jhana factors and the 5 hindrances from the night before...
We welcome a sense of contentment in our starting conditions, take interest in our breath and remind ourselves it is all we need while meditating. From here, we aim and sustain our attention.