The grip, a Basic Part of the Swing Map, serves three purposes
If you have a job that keeps you staring at a computer or sitting down all day then you are a candidate for a tight neck and the swing faults that result
Do not make tough bunker shots harder than they already are, when faced with a deep bunker with high lips play your stance and clubface square and let the loft of the sand wedge pop the ball up or just play the ball to a lower part of the bunker lip