Often times a swing flaw is due to a physical restriction or weakness in a particular area of your body. Improving one’s strength, flexibility and balance will help better your swing and prevent your swing from breaking down due to fatigue.
The main component of your swing is from your lower half. Good ‘core’ (back and belly muscles) and leg strength is a must. Having both will better your balance through your swing.
Increased strength training and conditioning, as well as, increasing the amount you golf will help increase your “muscle memory.” Muscle memory is a term used when a movement is repeated over time, a long-term “memory” is created for that task, eventually allowing it to be performed with minimal effort.