When the muscles on your wrists contract resulting into spasms whenever you putt, then you're suffering from yips. One probable cause is that you're not doing warm-up exercises before swinging out. Curing a golfer's yip problem is easy and when it's all gone, you'll see better results the next you make your putts.

Click here to watch a short video on curing your yips.

Source: GOLF.com; RealFeelGolfMats