5. Bathe in an onsen
Onsens, traditionally, are hot springs that Japanese people bathe in, usually communally (although men and women bathe at separate times or in separate pools). They can be natural hot spring pools, as Japan is very volcanically active, or pools fed by hot springs. Onsens are believed to have healing properties and the minerals are thought to be good for your health. You must wash before you enter the water and if you’ve got tattoos, check the signs as they sometimes have rules forbidding you to use the onsen.
When it comes to onsen etiquette, one rule that can be a little uncomfortable to travellers at first is that you must bathe naked. This is a very alien concept to many, but you have a 'modesty towel' for the walk to the water and once you're in your nerves will likely start to settle. Try not to let this put you off, it’s one of the best ways to experience Japanese culture and it will all be worth it when you’re relaxing in the warm water.