digest
Short Summary
Main recommendation: get at least 200 minutes per week of zone 2 cardio, and you do not need to schedule it as a dedicated exercise session; you can build it into everyday movement, especially rapid walking. Dr. Andrew Huberman says the scientific data point to 150 to 200 minutes weekly for cardiovascular and cerebrovascular health, healthspan, and lifespan, and he raises the target to 200. He also says zone 2 cardio can coexist with strength, hypertrophy, and speed training.
Key Points
- Recommended minimum: 200 minutes per week of zone 2 cardio, with 150 to 200 minutes cited as the range supported by the science.
- Zone 2 cardio is described as beneficial for cardiovascular health, cerebrovascular health, and other aspects of healthspan and lifespan.
- Huberman says Galpin told him zone 2 cardio does not impede and can enhance strength, hypertrophy, speed, and other cardiovascular training.
- Galpin does not consider zone 2 cardio to be "exercise" in the traditional sense, and says it can be accumulated through daily activity.
- Huberman's own routine: three resistance training sessions and two other cardiovascular sessions weekly, plus a long Sunday jog or hike he now views as outdoor movement rather than training.
Details Worth Noting
- Concrete instructions: Aim for at least 200 minutes of zone 2 cardio per week. Choose one or both approaches: schedule sessions (e.g., treadmill or bike sessions, or a long slow jog or hike), and/or increase the amount of walking, especially at a rapid pace. Increase total daily movement by walking while taking groceries in and out, playing with kids, walking with a coworker during discussions, pacing while taking work calls, or taking calls outdoors. Use nasal breathing or conversational pace as a check: in zone 2 you should be able to maintain nasal breathing or hold a conversation.
- Huberman's example zone 2 session: a slow jog of 60 to 90 minutes, or a hike ranging from one to four hours, done outdoors when possible for sunlight and fresh air.
- Huberman acknowledges his once-a-week session does not always reach the 150 to 200 minute threshold, and Galpin's reassurance was that this is acceptable when movement is added throughout the week.
- Galpin's view is that if you move enough during daily activities, you probably do not need to count minutes precisely.
- Huberman notes that framing zone 2 as daily movement rather than training made the activity more enjoyable and freed time for work, sleep, and social connection, which he considers important for mental and physical health.
Bottom Line
Zone 2 cardio is presented as a flexible, high-value target: reach about 200 weekly minutes by weaving rapid walking and everyday movement into your day, without sacrificing sleep, social time, or other training.
