Compare distance lost at 60-70% swing effort
The speaker says that when they disciplined themselves to swing at about 60-70% effort, they were only down roughly 10-15% on yardage on a full eight iron, while still launching and spinning the ball normally. The speaker says the perception of how hard you think you need to swing is probably the biggest damage to sequencing, since jamming at the ball with your hands and arms is what actually hurts it.
Channel: Club Champion
Watch official source at 28:19