August 6, 2017

¹ One group of baseball hitters practiced by first facing a group of fast balls; then moved on to curve-balls; then moved on to knuckle balls. 
The second group used Random Practice mixing up the different balls.  The second group improved their hit rate in play by 57%...

July 21, 2017

The impact of a lie angle that is 1° too upright could be an #8 iron approach going 4 metres further left of the target than it should have.  That could be off the green, or in the bunker, or even in the water.  The only fault of yours was that your clubs aren't proper...