Recent research suggests there has been a fall of 18% since 2015 in people volunteering for community projects, including sports clubs.
England and Harlequins scrum-half Danny Care tells BBC Radio 5 live Breakfast's Rachel Burden why it's so important for people to help out at grassroots level.
If you want to learn more about volunteering and how to get involved, check out our inclusive Get Inspired guide.
And if you know an unsung hero who volunteers in sport or activity in your community, why not nominate them for the BBC Sports Personality of the Year Unsung Hero award? Find out how, here.