Golf-Specific Fitness with Jeff Kroop Welcome to Golf Specific Essentials! WHAT IS GOLF SPECIFIC FITNESS? Golf Specific Fitness Training is the missing link between the golfer and his or her ability to achieve optimal performance. For golf's physical demands, there are 8 areas of focus. Flexibility (Elasticity) Stability (Ground Force) Muscular Endurance (Loading and Firing) Mobility (Rotary Force) Posture (Core ...