Kayaking has been practiced for over 5,000 years by indigenous groups in Arctic regions who constructed early kayaks from materials available to them. While some tribes used large skin boats called umiaks measuring over 60 feet, modern kayaks were introduced in Europe in the mid-1800s and were adopted for recreation. Kayaking provides cardiovascular and muscular benefits and involves using a double-bladed paddle to propel the kayak while seated and observing safety precautions.