Yips, chips and putting - golfers terror not psychological

"Golfers' yips are down to cramp similar to those experienced by writers and musicians, US experts say.

The yips is a term for jerky movements that get worse when the player is anxious and can cripple their putting and chipping skills.

Some say the root of the problem is psychological, while others say it is a form of movement disorder, or dystonia.

The Mayo Clinic team told a neurology conference in Miami, Florida, how their lab tests showed it was down to spasms."

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