https://www.theguardian.com/lifeandstyle/2024/oct/15/sleep-perfectionists-the-exhausting-rise-of-orthosomnia > The UK sleep-tracker industry is estimated to be worth £270m a year – and forecast to double by 2030. Could all this data be making our insomnia worse? > The other day, I was plodding away on the treadmill at the gym when I overheard two blokes chatting.