Why does Ayurveda link poor digestion to poor sleep?

Why does Ayurveda link poor digestion to poor sleep?

This comes up frequently, and it is worth separating the classical position from how I actually apply it in practice. Poor sleep in Ayurveda is rarely treated as an isolated problem — it is usually downstream of an aggravated Vata or Pitta pattern, disrupted digestion, or an evening routine that works against the…