🦋 Why Butterfly Demands Extreme Mobility + Closed Chain Core Power The butterfly stroke isn’t just about brute strength — it’s about control. Fluid, explosive, total-body control. To truly master butterfly, especially the modern straight-arm style, you need more than upper body power. You need extreme mobility and closed-chain core strength — the kind that lets your body snap like a whip and launch out of the water with that signature dolphin “pop” effect. As a 100kg athlete who’s spent decades in the pool and on the floor, I’ve found the key to unlocking that power: bodyweight protractive plank drills blended seamlessly through vinyasa-style movement. ⸻ 🔑 Why It Works: Movements like scapular pull-ups, planche leans, cat/cow pose, downward dogs, and plank-to-pike transitions build the dynamic trunk control butterfly demands. These aren’t just yoga moves — they train the protraction, posterior tilt, and shoulder rhythm needed for elite-level straight-arm swimming. You’re not j...