Oxygen may be the gas that keeps us alive, while carbon dioxide is the gas we exhale. But between the inhale and the exhale, CO₂ may help regulate blood flow through the brain and even provide the pulse needed to wash damaging proteins away.

Your brain’s nightly “dishwasher” relies on cerebrospinal fluid to help clear waste. Power it up with a simple body movement that supports the process in a surprising way: a hydraulic-like connection between the abdomen, spine and brain.

When sleep problems creep up with age, some may turn to sleep aids. But a commonly used sleep drug clogs the plumbing of a little-known brain system, preventing the brain from clearing out toxic waste and potentially leading to cognitive decline.

You’ve probably heard that omega-3s, like you find in fish oil, can improve your brain health. But the truth is, their effect on your brain is nothing short of miraculous…