Meditation has many forms and each one has different benefits.
I meditate to improve the connection between mind and body - to seek out phsyical/emotional tensions and blockages which interfere with smooth, efficient movement and healthy body function. For those seeking MA functionality imo this increases speed and decreases reaction time.
Regular meditation also helps keep the problems of life in perspective and helps prevent them getting on top of you so you can see the woods for the trees and usually solutions present themselves more easily. Often trying to overanalyse things mean we don't listen to our deeper wisdom that often knows best. This isn't some new age hippy cr@p but the simple truth that our subconscoius mind takes in far more than we are consciously aware of. Every second we are bombarded with sounds, images, smells etc and we can't consciously be aware of all this information but subconsiously it is stored and processed. Meditation helps us become more aware of this vast storehouse of memories and resources by quietening down our conscious thoughts, fears and insecurities and gradually opening us up to what is possible when we can truly relax and let go.

Hope that made some sense to somebody.