Some vapers who fast for religious purposes choose not to vape during that time. Some religions have specific rules guiding their culture’s fasting behaviors. For example, in Islam, Muslims can only consume what is halal. Things that could be harmful to your health are forbidden. The rules were conceived thousands of years ago, so there is no language explicitly banning vaping during Ramadan. Still, many modern Muslims choose to go without their vapes while they fast. It is best to look at the rules for your community during fasting. Religion is very personal, so you can make whatever choice is best for you.