BrainSavers founder Dr. Paul Bendheim and other neurologists explain how a nightly drink hurts your sleep and your aging brain — and four simple ways to protect it.

Irregular sleep was not good in any study Among all the studies reviewed, irregular sleep was either neutral or harmful; none showed that irregular sleep was good for health or performance In some long‑term studies, each extra hour of fluctuation in sleep timing was linked to notably higher risk of metabolic syndrome and heart events.