Sports & Fitness6 Min Read Blake CarrotonMarch 19, 2025 The 12-3-30 Workout in 2025: Unpacking TikTok’s Viral Fitness Phenom The 12-3-30 workout—12% incline, 3 mph, 30 minutes—dominates TikTok in 2025 with 325M views. Simple, effective, and viral!