Jack Grimes - Building AFL Players on Instagram: "Assess your score below👇🏼 What tests repeat speed? That footy-specific, stop-start gut running from contest to contest? The Yo-Yo test comes close, but it doesn’t quite nail it. Enter the JJ’s Red Zone Test. See how long you can survive in the red zone. 🔹 TEST PROTOCOL 🔹 SETUP • 40 m shuttle for males, 35 m for females • Must touch the cone at the end point PROTOCOL • Start one sprint every 45 seconds • The 45 second interval never changes TA