Adventure tourism is defined as the movement of people from one to another place outside their comfort zone for exploration or travel to remote areas, exotic and possibly hostile areas. Adventure tourism is a type of tourism in which tourists do adventurous activities like skydiving, hill climbing, Paragliding, and trekking. Adventure tourism is very popular among young age tourists. Adventure tourism gains much of its excitement by allowing tourists to step outside their comfort zone. You don't necessarily have to go base jumping or go scuba diving with sharks to be an adventure tourist (although those activities definitely qualify).
Adventure tourism is about connecting with a new culture or a new landscape and being physically active at the same time. It is not about being risky or pushing your boundaries. In fact, it is especially important to know and respect your limits while you are in an unfamiliar area.