Diet, sleep, brain health, gut biome, workout, morning and nighttime routines: in 2026, is there anything we’re not being encouraged to optimise in our bid to live a better, longer life? Open Instagram and you’ll be inundated with celebrities, strangers, family and friends documenting their pursuit of the perfect version of themselves by whatever means necessary – no matter how extreme, and no matter the cost, not just to their bottom line, but to their physical and mental wellbeing.