The Tim Ferriss Show#858: The Random Show, Couch Edition! — Supplements, Hummingbirds, Cock Rings, Optimizing Mitochondria, Breathing and Balance Training, Cool Grip Strength Tools, and MoreHIIT with five-year benefits
1:19:46–1:20:08 · 22s
Tim cites research that Norwegian 4x4 intervals done for six months can yield cognitive and vascular benefits observable for up to five years.