What causes runner’s high – and how can you boost your chances of an ecstatic 5k?

A few lucky runners can look forward to ‘an orchestra of neurochemical changes’ when they lace up their trainers. Why do the rest of us just get sweaty? And do other forms of exercise have the same effect? The runner’s high, where pavement-pounding drudgery turns into something like a chemically enhanced experience, is an elusive state to pin down. Some people seem to get it during most of their runs; others rarely, or barely at all. A few lucky Couch to 5kers claim to experience it within th...

By Joel Snape