Inside Health

Inside Health listener and keep fit enthusiast, David Heathcote, wanted advice on how far he should safely push himself when he's training in the gym.In this special programme about the health benefits of keeping active, Dr Mark Porter helps David to find the answer to his question about the exercise "sweet spot". If you struggle to screw the top off a jar, or use your arms to push yourself out of your chair, that's a sure fire sign, according to Dr Philip Conaghan, consultant rheumatologist and Professor of Musculoskeletal Medicine at the University of Leeds, that your muscles are weak. And the good news is that building muscle strength will protect your joints, not damage them. Dr Conaghan tells Mark that there's a worrying lack of understanding about the impact of muscle weakness on arthritic joints.Over the last decade there's been a growing interest in the relationship between activity and the risk of developing cancer. Studies have demonstrated that exercise appears to have a protective effect against a