Turns out pandemics can be atrocious for our backs. By last October, more than a third of people in the UK had reported increased back pain, according to one study – and that was before an intense winter lockdown, followed by a month-long storm. We’ve been doing online yoga without an instructor’s watchful eye and lunging with Joe Wicks without warming up, but mostly slouching over laptops feeling tense or depressed. While the onset of back,...