Story links for Tony Delroy’s NightLife May 13 You’ve got to have friends – one study shows people with friends have a higher pain tolerance. But how sure can we be that the people we think are friends really are? The Australian Yoga Therapy Conference on this weekend . One recent study shows yoga can help with pre-dementia. While another study suggests yoga isn’t a standalone solution for health problems. Grown ups might be having a lot more effect on the children they’re with than they can guess. And teens are also affected by their parent’s mental health. The continuing debate on whether it’s better to read from a screen or a book shows there are important differences in what we pick up.