https://howmuchshouldiweigh.org/Healthy weight, food, sleep and movement, from public health sourceshttps://howmuchshouldiweigh.org/physical-activity-guidelines-for-adults/https://howmuchshouldiweigh.org/physical-activity-guidelines-for-adults/2026-10-27The adult physical activity guidelines from the WHO, the CDC and the NHS explained: 150 to 300 minutes of moderate or 75 to 150 of vigorous activity, muscle strengthening on two days, sitting less, how to judge intensity and how to start from zero.https://howmuchshouldiweigh.org/adult-bmi-categories/https://howmuchshouldiweigh.org/adult-bmi-categories/2026-10-27The adult BMI categories used by the WHO, CDC and NHS, the obesity classes, the lower thresholds NICE recommends for South Asian, Chinese, other Asian, Middle Eastern, Black African and African-Caribbean adults, and how to read a result.https://howmuchshouldiweigh.org/balanced-plate-eatwell-guide/https://howmuchshouldiweigh.org/balanced-plate-eatwell-guide/2026-10-27How the NHS Eatwell Guide divides food into five groups, the WHO's four principles of a healthy diet, what US guidance changed in 2026, and how to turn a balanced plate into everyday meals without counting everything.https://howmuchshouldiweigh.org/better-sleep-habits/https://howmuchshouldiweigh.org/better-sleep-habits/2026-10-27The sleep habits recommended by the NHS, the CDC and the WHO: a regular routine, a calm wind-down, a dark, quiet and cool bedroom, caffeine, alcohol and meal timing, daytime activity, what to do when you cannot sleep and when to see a GP.https://howmuchshouldiweigh.org/bmi-for-children-and-teens/https://howmuchshouldiweigh.org/bmi-for-children-and-teens/2026-10-27Why adult BMI categories do not apply to children and teenagers, how BMI-for-age percentiles work, the CDC categories, how the WHO defines overweight in 5 to 19 year olds, which official calculators to use and how to talk about weight with young people.https://howmuchshouldiweigh.org/fibre-and-whole-grains/https://howmuchshouldiweigh.org/fibre-and-whole-grains/2026-10-27Why dietary fibre matters, how much adults and children need according to the NHS and WHO, what most people actually eat, the best everyday sources (whole grains, pulses, vegetables, fruit, nuts) and how to read labels for fibre.https://howmuchshouldiweigh.org/fruit-and-vegetables-5-a-day/https://howmuchshouldiweigh.org/fruit-and-vegetables-5-a-day/2026-10-27What counts as a portion of fruit or vegetables, why potatoes do not count, the limits on juice, pulses and dried fruit, how the NHS 5 A Day relates to the WHO's 400 g a day, and simple ways to eat more without spending more.https://howmuchshouldiweigh.org/resources/how-much-should-i-weigh-for-my-height/https://howmuchshouldiweigh.org/resources/how-much-should-i-weigh-for-my-height/2026-10-27The healthy weight range for adults at every height from 4 ft 10 in to 6 ft 6 in and from 150 to 195 cm, how it is calculated from BMI, why it is a range rather than one ideal number, and when it does not apply.https://howmuchshouldiweigh.org/how-much-sleep-do-adults-need/https://howmuchshouldiweigh.org/how-much-sleep-do-adults-need/2026-10-27Recommended hours of sleep for adults, older adults, teenagers and children from the CDC and the NIH's National Heart, Lung, and Blood Institute, why quality and timing matter as well as hours, signs you are short of sleep and when to see a doctor.https://howmuchshouldiweigh.org/moving-to-a-new-city-staying-active/https://howmuchshouldiweigh.org/moving-to-a-new-city-staying-active/2026-10-27How to choose where to live in a new city so that staying active is easy: walkable everyday destinations, parks within reach, a commute on foot or by bike, places to exercise, food shops nearby and a bedroom quiet enough to sleep, with a checklist for viewings and the first weeks.https://howmuchshouldiweigh.org/sleep-appetite-and-weight/https://howmuchshouldiweigh.org/sleep-appetite-and-weight/2026-10-27What the NIH, the NIDDK and the CDC say about the links between short sleep, hunger hormones, blood sugar and weight, what the evidence can and cannot show, and why better sleep is worth pursuing for its own sake.https://howmuchshouldiweigh.org/strength-training-for-beginners/https://howmuchshouldiweigh.org/strength-training-for-beginners/2026-10-27Why the WHO, the CDC and the NHS recommend muscle-strengthening activity on at least two days a week, what counts (from gardening to resistance bands), simple body-weight exercises from the NHS, how hard to work and how to stay safe.https://howmuchshouldiweigh.org/stress-and-everyday-habits/https://howmuchshouldiweigh.org/stress-and-everyday-habits/2026-10-27How stress affects sleep, appetite and energy according to the WHO and the NIH, why some ways of coping backfire, the practical steps recommended by the NHS and the WHO, and when stress or anxiety needs professional help.https://howmuchshouldiweigh.org/free-sugars-and-salt/https://howmuchshouldiweigh.org/free-sugars-and-salt/2026-10-27What free sugars are, the WHO and NHS limits (under 10% of energy, 30 g a day for adults), why salt raises blood pressure, the 5 g and 6 g salt limits, where hidden sugar and salt come from and how to read labels.https://howmuchshouldiweigh.org/waist-to-height-ratio/https://howmuchshouldiweigh.org/waist-to-height-ratio/2026-10-27How to measure your waist correctly, how to work out your waist-to-height ratio in centimetres or inches, the NICE bands (0.4 to 0.49, 0.5 to 0.59, 0.6 or more), who the ratio suits and how it complements BMI.https://howmuchshouldiweigh.org/walking-for-health/https://howmuchshouldiweigh.org/walking-for-health/2026-10-27Why walking is one of the easiest ways to meet the activity guidelines, what counts as a brisk pace (about 3 miles an hour, the talk test), whether 10,000 steps is an official target, how to build walking into the day and how to stay motivated.https://howmuchshouldiweigh.org/resources/what-is-a-healthy-weight/https://howmuchshouldiweigh.org/resources/what-is-a-healthy-weight/2026-10-27What health services mean by a healthy weight, why BMI is used to screen for it, what it misses (muscle, fat distribution, age, ethnicity), which other measures help, and what affects weight beyond food and exercise.