My deepest meditation sessions are achieved while walking, without any earphone (no music); it can be so intense that, while being aware of where I am and of what is around me, my brain enters into a state of total chaos. I just let it free : no directed thinking, no censorship, most often without words. So many things are happening in my brain during such meditation, much more that I am aware of. Such session can last easily an hour or more. Much later, after such session, I realize that I am making much more connections between ideas, facts, news, history, pictures, etc. The best trails for my meditations are found near old industrial zones or near tracks, like this one, but I can achieve that, even on sidewalks of a busy street; reaching that meditation state is almost automatic. The only problem meditating in crowed area comes when, suddenly, somebody shouts something loudly while he/she is near me; that coming out suddenly from meditation is really hurtful.