Lauren Hurst, a personal trainer who specializes in older people ... being put off by gym classes at school. But those who do exercise, and have therefore found it easier to stay fit and active ...

“With almost half of younger people saying being too busy with work and too tired held them back from being more active.” ...

The researchers believe that being physically active in old age will help people respond better to vaccines, and so be better protected against infections such as flu. Steve Harridge, co-author ...