Does cracking your knuckles cause arthritis and will running really ruin your knees? Experts separate fact from fiction

MOST of us don’t give our joints much thought - but our bodies have around 350 of them, and they’re pretty important. From the tiny ones in our toes to our shoulders, hips and knees, our joints keep us moving - whether we’re walking, running, or simply bending down to tie our laces.  Unfortunately, if...