Taking place on Wednesday 18 September, the day aims to encourage people to get moving – no matter their fitness level – to start building habits that will improve their health.
To mark the day, non-members will be able to try some of Active’s classes for free, at Springfield and Les Quennevais.
Places are available on a first-come-first-served basis.
Free gym sessions will also be available at Springfield and Les Quennevais for the day.
Throughout the day, competitions will be held and a National Fitness Day Leaderboard Challenge will be at each fitness site.
Participants could be in with the chance of winning a year’s Active membership, worth £539.55, plus many other prizes.