Today, we do most of our work via computers and so, it is our responsibility to maintain it properly and take good care of it. Our personal computers are like our fine automobiles which needs preventive maintenance to run efficiently and avoid major breakdowns. At time while using Mac you might notice its performance bit sluggish when you really relying on its speed to get your job done. You want your mac to work faster and stronger. But due to accumulation of useless and unwanted files your Mac experiences performance issues. So, in order to avoid its sluggishness and slowness you need to improve Mac speed. It can be done by removing unwanted and duplicate files and rearranging your data and run the defragmenter.