The Bible says, "Be still, and know that I am God".
It is estimated by psychologists that we have some 60,000 thoughts each day and of these about 95% of them are repeated every day. And these thoughts, on the physical level consume a lot of energy. Just by maintaining silence for a few minutes the amount of energy spent can be reduced by a large amount and the number of thoughts also get reduced.
When we reduce the amount of thoughts, we will be able to hold other thoughts a little longer and when you hold the little thoughts that come into your mind a little longer they become powerful. The thoughts become so powerful that "when a thought is released from the seat of silence, a mere wish becomes a command to the universe."
During meditation we sit still and remain silent and that is why meditation is so potent. The best thing about meditation is that it transfers the higher vibration to you. Even if you do not know the techniques of meditation, just sit, remain silent and listen. You do not even have to listen. Just remain quiet, solitary and still.