How biological age is measured in London
fjt reads four signals from everyday life in London: steps and movement, sleep duration and regularity, perceived stress, and nutrition including alcohol and caffeine. These map onto established ageing markers and collapse into one score.
No wearable required — your phone is already with you, so measurement starts on day one and updates daily.
Lifestyle factors specific to London
Long commutes and late dinners are London's two most common risks; fjt scores meal timing together with sleep quality.
Lowering your biological age in 30 days
Anchor your bedtime: keep weekday and weekend within 60 minutes of each other.
Aim for 7,000–8,000 steps, spread across short walks around London.
Finish dinner at least three hours before sleep.
Add two resistance sessions a week and five minutes of breathwork daily.