biohacks

Make the bedroom as dark as you can all night: block outside light, cover standby LEDs and seal the door gap to protect the melatonin signal.

Read the label on everything packaged for two weeks and total your added sugar against the AHA limit — 25 g a day for women, 36 g for men.

If you nap, keep it to about 20 minutes and take it in the early afternoon — a short nap stays in light sleep and leaves the night alone.

Walk your home one room at a time and fix what could trip you — loose rugs, clutter, cords, dim stairwells and missing handrails. Most of it is an afternoon's work.

Make plain water your default drink, and use thirst and urine colour — not a fixed daily number — to tell you when to drink more.

Keep headphone volume down, take breaks, and step away from or plug your ears against loud noise — noise-induced hearing loss is preventable.

Get 5–10 minutes of outdoor light within 30 minutes of waking — morning light is the main signal that sets the body clock to the day.

A behavioural plan for stopping smoking or vaping: log the habit for a week to find your triggers, pick a date, clear the supply the night before, and decide in advance what replaces each trigger.

One minute of resistance-band work at the top of every working hour — pull-aparts, dislocates, a set of squats. Eight minutes of accumulated volume that costs no gym trip.

One weigh-in a week, same day, same time, same conditions — and read the four-week trend rather than the number. Daily readings mostly measure noise and mostly cost mood.

Thirty consecutive days with no alcohol, with sleep duration, sleep quality, resting heart rate and morning energy logged for a baseline week first — the value is the comparison, not the abstinence.

Take two blood-pressure readings each morning and evening for seven days on a validated upper-arm cuff, then average the whole week.