This document discusses using behavioral science to increase volunteering, particularly for sports. It introduces GIVERS, a framework of 6 behavioral principles to apply: Growth, Impact, Experience, Recognition, Voice and Social. The principles are based on an analysis of UK volunteering data and literature. Some key findings are that volunteering improves well-being, many don't realize community sports rely on volunteers, and barriers like a perceived lack of fitness are myths. The document advocates emphasizing the benefits of volunteering like increased happiness to recruit more volunteers and ensure volunteers feel appreciated and see the impact of their efforts.