Why exercise is important Benefits of exercise Why we should sit less Exercise guidelines Physical activity guidelines for adults aged 19 to 64 Physical activity guidelines for older adults Physical activity guidelines for children and young people Physical activity guidelines for children (under 5 years) Fitness advice for wheelchair users Strength and flexibility exercises How to improve your strength and flexibility Strength and Flex exercise plan: How-to videos Balance exercises Flexibility exercises Sitting exercises Strength exercises Exercises for sciatica problems Running and aerobic exercises Get running with Couch to 5K Walking for health How to warm up before exercising How to stretch after exercising Knee exercises for runners Knee pain and other running injuries Exercise videos NHS Fitness Studio videos