Everything You've Been Taught About The Lead Arm Is Wrong!
Golf Instruction · Sep 6, 2026 · 14K views · 197 likes
In this video Mike Granato & Shaun Webb from Athletic Motion Golf break down one of golf's most repeated pieces of advice, keep your left arm straight, and show why the data says the opposite. Using their Gears 3D database across PGA Tour winners and major champions, they measure real elbow bend at address, the top of the backswing, and impact, and the numbers land nowhere close to straight. They explain the "arm switch," the move where the trail arm bends and the lead arm straightens through impact, then immediately reverses after the ball, and why practicing a locked-off, straight-arm position to "get shaft lean" almost never transfers to a real golf swing. They also cover why extension after impact matters more than a straight arm at impact, and how amateurs at every level, even club champions, actually move their arms compared to what's taught in a typical lesson. If you've ever worn a training aid or forced a position to keep your left arm from bending, this one is for you. FREE Training Here: Unlock Tour-like Compression For Free Here 👇https://athleticmotiongolf.com/compression Chapters: 00:00 The "keep your left arm straight" myth 00:44 How they test if something is a real fundamental 01:00 Why forcing a straight arm causes bigger problems 01:29 Two tour winners compared on elbow bend 02:10 What actually happens at the top of the backswing 02:44 Why locking the arm locks up the whole swing 03:08 The pecking order inside their player database 03:46 These guys aren't even swing fault cases 04:04 What happens to the arms in the downswing 04:43 The truth about extension through the ball 05:08 A real athlete practicing the wrong move 05:43 What the "arm switch" actually looks like 06:23 Comparing both players' impact numbers 06:43 The "home plate" look explained 07:08 Why this drill won't transfer to real golf 07:47 Why the wrong version keeps getting taught anyway 08:25 The consequences of chasing shaft lean 08:43 What you'd find at every club championship 09:28 Less than 1% pull this off successfully 09:42 What good instruction actually leaves alone 10:20 What real training aids should not be doing 11:01 The concept: everything switches sides 11:16 Even tour players fall into bad habits 12:01 The funnel: why the best all end up doing the same thing
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