

Everyone meditates, some people do so consciously, sitting on nice place, actively flushing the mind. Others go fishing, dancing or whatever - people tend to clean up instinctively and the only thing you gain by doing it purposefully is higher efficiency.
Our minds are not omnipotent, they have to rest and forget to be able to absorb new things. While we sleep, our minds replay last day and create the long term memory, so sleep is not enough. If you dance and stop thinking about about anything, if you focus only on the timid water and stop thinking, if stop thinking, then you meditate.
For most people this state of being is not achievable consciously at once without any practice. One has to go step by step from helpers like music and unconscious meditation to get the ability to turn off anywhere for time one has. Once you get it, you are able to face any challenge easier.