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A one-leg stand need not be hands-free: use a sturdy wall and practise for 5–10 seconds per side, only while you feel steady and in control.

Use dim red light to check a map while stargazing without disrupting your night vision as much. Keep brightness low: the colour alone is not enough.

Check tire pressure in cold weather before driving and use your car's recommended setting, not the maximum pressure printed on the tire sidewall.

Reduce wood stove pollution: skip fires lit just for atmosphere, check local air quality and use dry, untreated wood according to your stove manual.

Daylight hours in autumn shrink by about four minutes a day in Amsterdam in early October. A wave-shaped yearly pattern explains this rapid change.

Condensation on a glass comes from the air. Compare a cold glass with one at room temperature, then use a coaster to keep moisture off delicate tables.

Add more daily movement to your journey home: get off one stop early or take a manageable flight of stairs. Start with just one regular point on your route.