When we swing a golf club we need to use our shoulders. We have two shoulders: your front shoulder that is closest to the target and your back shoulder which is farther from the target. When our front arm is straight at setup and through contact our contact can be more consistent. If it bends it has a chance of swinging up or around the golf ball creating inconsistent contact.
A golfer needs to initiate the straight front arm at setup to ensure proper position of the clubface. Feeling like the front shoulder, down the arm, through the club is all a straight line. If your front arm is not straight our club will not have a good chance of connecting properly with the golf ball.
Next we need to maintain the front arm staying straight through the golf shot. This is extending your front arm sweeping through contact. If the back arm pushes the front arm through impact, the clubface will move around making contact harder to occur.
Check out my video for a visual explanation. Look forward to blogging about this more in the future!