How to run efficiently ↓ Watch these two clips. ❌ In the first, I’m bouncing with every step—wasting energy going up and down. ✅ In the second, I’m running stable and smooth—channeling that energy forward. This is called vertical displacement—and the more of it you have, the more energy you lose. A simple way to test this is the “eye gaze test”: focus your eyes straight ahead while you run, and see how much your gaze bounces with each stride (another option: film yourself and review the footage)

293K views · 5.8K reactions | Running 100 km (62 miles) in 100°F (38°C) heat through the desert. This was our longest run to date! At the finish line neither of us ever wanted to do that again… but a couple days later we’re already thinking about the next one . #ultramarathon #arizona #desert #run #hot #100k #62miles #trail #trailrun #cactus @hoka @javelinajundred Music by Ikson | Thruhikers | Facebook