This document discusses the application of basic science to recreational sports like kayaking. It explains that recreational sports aim to improve fun, physical fitness, and social involvement through lower-stress participation compared to competitive sports. Kayaking specifically applies principles of physics like Newton's laws of motion. It also requires knowledge of tides and currents from changes in water levels caused by the sun and moon's gravitational pull. Participating in recreational sports can provide physiological effects as well, like increasing heart rate and blood flow to supply working muscles with oxygen. Overall, the document argues that a basic understanding of relevant science principles is important for safely enjoying recreational sports activities.