3×30s holds, 5 days/week
The optimal static stretching protocol for lasting flexibility gains is 3 sets of 30-second holds per muscle group, performed 5 or more days per week.
Snapshot · Huberman Lab
Essentials: Improve Flexibility with Research-Supported Stretching Protocols
Explore episode
Jun 18, 2026
Where this was said
Tool: Static Stretching Protocol, Frequency
At 17:05 · chapter starts 15:43
Drawing on a peer-reviewed review — 'The Relation Between Stretching Typology and Stretching Duration: The Effects on Range of Motion' — Huberman delivers the numbers. [1] — Andrew Huberman "A major review found that all stretching types improve range of motion over time, but static stretching produced statistically significant …" 15:00 Static stretching produced statistically significant long-term range-of-motion gains (p<0.05) compared to ballistic and PNF protocols, and the review identified a critical minimum dose: at least 5 minutes of stretching per muscle group per week. This figure applies to total weekly volume, not to any single session — a crucial clarification, since 5 minutes per session would be wildly excessive. In practice, Huberman translates this into a concrete protocol: 3 sets of 30-second static holds per muscle group, performed 5 days per week, producing 90 seconds per session and easily clearing the 5-minute weekly threshold. Using hamstrings as the example, he walks through exactly how a session would feel: hold for 30 seconds, rest, repeat twice more. Short, manageable, and grounded in the literature — and, he notes, consistent with the frequency needed to offset age-related flexibility loss.
≥5 min/week total stretch time
Research shows that at least 5 minutes of stretching per week per muscle group is the minimum threshold to produce real range-of-motion improvements.
Warm Up Before You Stretch — Here's How
Stretching cold raises injury risk even with static holds. Raise your core body temperature first — either by arriving warm from a workout or doing 5–10 minutes of easy cardio or calisthenics. The best time to stretch is after resistance or cardiovascular training, when you're already warm and the muscles are most pliable.
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