Who can you spot working up a sweat? Who has changed the most in the last 20 years?
9. Fitness First Gym
Weight management co-ordinator Katie Warburton on one of the exercise machines at the Fitness First Gym, Penistone Road, Wadsley Bridge, Sheffield Photo: Mike Waistell (Staff)
10. Squash team
England's women's junior squash team have pulled off a stunning victory in the world championships - helped by Sheffield experts. Sheffield's Centre of Sport and Exercise Science (CSES) set the five-strong squad on the path to victory with a thorough training programme in 2001 Photo: Submitted
11. Exercise revolution
Exercise is undergoing a revolution - as Spinning came to Hillsborough Leisure Centre 2001.
The new fitness craze has taken America by storm and is set to repeat its success in Sheffield. Essentially aerobics on bikes, it gives a completely different kind of workout for the legs, arms and shoulders. Photo: Hurndall Ross
12. Exercising workout
Pictured with the exercise ball at Manor Clinic back in 2003 was Wendy Fenwick Photo: Steve Ellis