Our bodies are in a constant state of ebb and flow, from the breaths we're taking to the fluids washing our brains clean each night. Scientists have now discovered that key rhythms in our brains and in our guts actually share some of the same underlying physics. The same oscillation patterns that help to digest food also appear to be at work in the brain's blood vessels, helping to deliver oxygen and nutrients when needed. The findings could significantly improve our understanding of both