How long should I walk for in the morning?

For a morning walk, especially one aimed at gaining the alertness benefits of sunlight, Andrew Huberman suggests a protocol of getting outdoors and walking. The ideal duration can depend on the brightness of the environment, but the guideline is as follows:

• A minimum of 2 minutes
• 10 minutes would be better
• 30 minutes would be fantastic

If it's a very bright day, such as a clear day on a snowfield, you might only need around 60 seconds to achieve benefits. For most people, however, a 10 to 15-minute walk should ensure adequate stimulation from sunlight, enhancing mental and physical well-being 1.