What is the zero-cost newsletter?

The Neural Network Newsletter is a zero-cost newsletter provided by the Huberman Lab. It features free podcast summaries and toolkits, which are brief PDFs outlining science-backed protocols for various health and wellness topics like sleep improvement, focus enhancement, dopamine optimization, and deliberate cold exposure. Subscribers receive these resources directly to their email without any cost, and their email addresses are not shared with anyone. To subscribe, you simply need to provide your email on the Huberman Lab website 1.