My elderly dad is continuing to go for a daily paper. He's nearly 80 and it's a twenty minute round walk - the shop is a supermarket express store. My mother who is a bit younger than him is asthmatic and refusing to go shopping, etc. My belief is that he shouldn't be going - he can go for a walk, but it would be better if he was not going to the shop every day. How can I make him see sense and stop this? Mum is quite anxious about catching this and it killing her. She had a chest infection earlier in the year and it took her weeks to fully recover.