It’s clear that the brain can’t do ‘future’ very well. It can do past; it’s riddled with it; but the future is guess work, projections fuelled by pleasure and fear, attraction and aversion. An upcoming event in the mind seems made of a remembrance of a venue or setting, plus old feelings from last time, or many times, stored in the same ‘me in that kind of situation’ box. This is how it does future, and sat still in the quiet morning, its level of validity and potency fades.
Otherwise, during the sitting: strong tensions in various parts of the body, especially the neck. Some contorting, some shaking. A deep feeling of sensation from a position as neutral as possible, of reactions and distractions.