Yes, genetic factors are possible. For example, last year a new gene interaction...

		cercatrova on May 19, 2020 \| parent \| context \| favorite \| on: The effects on cognition of sleeping 4 hours per n... Yes, genetic factors are possible. For example, last year a new gene interaction was discovered for people who need less sleep: https://www.nih.gov/news-events/nih-research-matters/gene-id...