Meditation is a specific technique that is totally different from the normal waking state. Meditation is not a part of any religion; it is a science, which means that the process of meditation follows a particular sequence, has definite concept, and produces results that can be verified.In meditation, the mind is clear, relaxed, and inwardly focused. When you meditate, you are fully awake and alert, but your mind is not focused on the external world or on the events taking place around you. Meditation requires an inner state that is still and focused so that the mind becomes silent. When the mind is silent and no longer distracts you, meditation deepens.
Meditation is the exercise for your mind. Just like other physical exercise and yoga poses for your body, you also need something to freshen your mind which can be achieved through meditation. it takes your mind out of this materialistic world and it will help you connect with the cosmic world if you do it right. Here is a good YouTube video explaining it and how to do it efficiently.