Who can you spot working up a sweat? Who has changed the most in the last 20 years?
5. Over 50's keep fit session
Ladies taking part in the exercise class at the over 50s keep-fit session at Ponds Forge in 1999 Photo: Waistell
6. Pilates at Esporta
Pilates exercise instructer Gaye Mullins was taking a class at the Esporta Health Club, Archer Road, Sheffield in 2001 Photo: Mike Waistell (Staff)
7. Exercising like Bridget
Louise Archer, exercised the Bridget Jones way in 2001 Photo: Andrew Partridge (Staff)
8. Ready for the South Pole
Ivor Sirett one of the team of six tests out the freezing conditions on the tread mill at Sheffield's centre for sport and exercise in preperation for his part in the cold feet 2003 expedition to the South Pole, pictured in 2001 Photo: Andrew Partridge