My geriatric mantra is that there isn't any chronic disease that all people suffer from, that exercise isn't either the major therapeutic strategy or one of the most important. I'm John Warden, I'm a semi retired geriatrician. We started the Hunter Ageing Alliance four or five years ago and one of the big components that is the exercise programmes. The benefits of group exercise are many. Some people come for the socialisation, for making friends, and that's as important as the exercise. Social interactions in cognitive health are very important. They stop the connections between your neurons disintegrating. Unless you live a balanced life and you're learning, you're physically active, you're keeping up your social relationships, the connections in your brain, they're important for those areas will gradually atrophy. I think that getting the motivation in later life to change, to look after your cognitive health and your physical health is not easy. You've just got to start somewhere. Walk to the letterbox and once you walk to the letterbox, you can walk to the end of the street. Once you've done that, you can go around the block. Once you've done that, you can do a couple of blocks. For me, probably the most important thing I did in my life was join a book club. It's been the most wonderful group of friends and makes you read a lot of books you wouldn't read otherwise. And it's stimulating conversation and we meet regularly for coffee and lunches. It's so important to establish relationships. Your relationships improve your mood, your cognition and also help you with your curiosity about life. This is likely to change your life in many ways.