Norwegian 4x4 interval training
Subject in Fitness
Norwegian 4x4 interval training has come up in 1 episode across 1 podcast in TMT, including The Tim Ferriss Show. 1 person has made recorded remarks about it.
What people said
Tim FerrissAmerican author, podcaster and investor, host of The Tim Ferriss Show
Ferriss said data suggest five to six months of thrice-weekly Norwegian 4x4 training produces brain volume changes lasting up to five years.
“if you do five to six months of gutting it out three times a week, the results... Holy shit. The dividends pay off for, it seems, up to or possibly beyond five years”
The Tim Ferriss Show: #875: The Random Show — Tim and Kevin Talk Retreats, Mortality, AI Predictions, Supplements, Rock Climbing at (Almost) 50, and Not Waiting for “Someday” (Jul 16, 2026) · Listen from 50:50
Podcasts
- The Tim Ferriss Show · 1 episode
Episodes
#875: The Random Show — Tim and Kevin Talk Retreats, Mortality, AI Predictions, Supplements, Rock Climbing at (Almost) 50, and Not Waiting for “Someday”The Tim Ferriss Show · Jul 16, 2026 · 1 h 58 min
Tim Ferriss and Kevin Rose discuss Zen retreats, grief and mortality, rock climbing goals, supplements, psychedelic research, AI predictions and investing.