While there is no explicit legal "ban" on eating or drinking on the Tokyo Subway (including the Tokyo Metro and Toei Subway), doing so is considered a significant social faux pas and is generally frowned upon. Japanese culture places a high value on "omotenashi" (hospitality) and "wa" (harmony), which extends to maintaining a clean and quiet environment in public spaces. Eating on a crowded subway car is seen as inconsiderate because of the potential for spills, crumbs, and lingering food odors in a confined space. Drinking water or a bottled beverage is usually acceptable, especially in the humid summer months, but most locals will take a quick sip and put the bottle away immediately. An exception to this "no-eating" rule exists on long-distance "Shinkansen" (bullet trains) or limited express trains that feature tray tables and seat pockets; on these journeys, eating "ekiben" (station lunch boxes) is actually a celebrated part of the travel experience. However, for the daily commute on local subway lines, it is best to wait until you reach your destination or eat at one of the many convenient standing noodle shops located within the station concourses.