Martin Lewis: I averaged 25,437 steps a day (burning 3,993 calories) in 2021 – here's how...

This is my sixth annual steps blog. My well-documented obsession with the 'quantified self' is showing no sign of abating. According to my tracker, I did 9,284,614 steps (nearly 400,000 more than last year) – a ridiculous, hopefully healthy obsession.