150 Minutes a Week Plus Two Days of Strength: The WHO and CDC Baseline

A week has 10,080 minutes. Under World Health Organization (WHO) guidance, an adult who sets aside 150 of them for moderate-intensity activity reaches the starting point for substantial health benefits, roughly 1.5 per cent of the week.

The problem is that many people fall short of this. A WHO fact sheet updated on 26 June 2024 states that in 2022 about 31% of adults worldwide, around 1.8 billion people, were insufficiently active, 5 percentage points higher than in 2010, and projects that the figure will reach 35% by 2030.

The baseline numbers: 150 minutes, 75 minutes and two days

On 25 November 2020 the WHO published the WHO guidelines on physical activity and sedentary behaviour. The related paper, by Fiona C Bull and colleagues, appeared in the British Journal of Sports Medicine in November of that year. The guidelines recommend that adults aged 18 to 64 do 150 to 300 minutes of moderate-intensity aerobic activity a week, or 75 to 150 minutes of vigorous-intensity aerobic activity, or an equivalent mix of the two.

The adult guidelines page of the US Centers for Disease Control and Prevention (CDC) gives the same baseline: 150 minutes of moderate intensity, or 75 minutes of vigorous intensity, or an equivalent combination. The UK National Health Service (NHS) advises the same for adults aged 19 to 64, and suggests spreading activity over four to five days, or even every day.

Beyond aerobic activity, all three bodies call for muscle-strengthening activity on at least two days a week. The WHO specifies that it should work all the major muscle groups at moderate or greater intensity; the CDC likewise requires all major muscle groups to be worked.

Where moderate ends and vigorous begins

The CDC's examples are straightforward: brisk walking is moderate intensity, jogging or running is vigorous intensity, and weight training counts as muscle-strengthening.

No heart-rate monitor is needed. The NHS offers a talk test: at moderate intensity you can still talk but cannot sing; at vigorous intensity you cannot say more than a few words without pausing for breath. The guideline figures also show that anyone choosing vigorous intensity needs half the baseline minutes of moderate intensity each week.

Fitting 150 minutes into a schedule

The CDC states explicitly that the 150 minutes can be broken up, for example 30 minutes a day, five days a week. No official source provides a day-by-day timetable for busy people; the examples below are this publication's editorial suggestions, a simple division of the guideline figures rather than an official plan.

• Weekday spread: brisk walking for 30 minutes each day from Monday to Friday, 150 minutes of moderate intensity in all, with weight training added on two of those days.
• Four-day pattern: following the NHS suggestion of spreading activity over four to five days, brisk walking for about 38 minutes on Monday, Wednesday, Friday and Sunday, about 150 minutes in all, with weight training on Tuesday and Thursday.
• Tightest schedule: jogging or running for about 38 minutes on each of two days, about 75 minutes of vigorous activity in all, with weight training on two other days.

The CDC also suggests choosing activities you enjoy and are able to do, setting goals, and recording progress in an activity log.

Falling short of 150 minutes is not wasted effort

The WHO and the CDC both stress the same principle: some activity is better than none. The WHO fact sheet adds that all activity counts.

The returns from regular activity are not limited to one area. The WHO fact sheet lists links between regular activity and lower all-cause mortality, cardiovascular mortality, hypertension, certain cancers, type 2 diabetes and risk of falls, as well as better mental health, cognition, sleep and body fat measures. Conversely, people who are insufficiently active face a 20% to 30% higher risk of death than those who are sufficiently active.

Sitting is a separate matter. The WHO's 2020 guidelines were the organisation's first to make recommendations on sedentary behaviour. They advise limiting sedentary time, and state that replacing sitting with activity of any intensity, including light activity, has health benefits; adults who spend long periods sedentary are encouraged to do more than the baseline amount of activity.

Those who already meet the baseline still have room to go further. The WHO says that more than 300 minutes of moderate-intensity or 150 minutes of vigorous-intensity activity a week brings additional health benefits, but this is a conditional recommendation and does not apply to people with contraindications from chronic conditions. The CDC also says that going beyond the recommended amount brings extra benefits.

Before you start, know your health

The WHO states that physical activity is generally safe for people with chronic conditions who have no contraindications, and that the benefits outweigh the risks; people who are usually inactive can start with small amounts and build up gradually. The CDC also says moderate-intensity activity is safe for most people.

Even so, the following groups should see a doctor first:

• People with chronic conditions such as heart disease, arthritis or diabetes: the CDC advises talking to a doctor first about suitable types and amounts of activity.
• People who have been inactive for a long time, have a disability or are overweight: the CDC advises consulting a doctor before starting vigorous activity.
• People with a health condition or who have been inactive for a long time: the NHS advises consulting a GP first and matching the intensity of activity to your own fitness.

For those who cannot meet the baseline, the WHO advises being active within their own abilities, and consulting a health professional or physical activity specialist where needed.

Treat the numbers as a direction, not a gate

The 150 minutes may look like a threshold, but it works better as a direction. You may not reach it today, but every extra brisk walk and every moment spent sitting less counts. Begin with the easiest step, then build up gradually.

The guidance described here is current as of October 2026. It is general health information only and does not constitute medical advice.

Prices and details correct as of October 2026

This article is general health information, not medical advice. For any health concern, consult a doctor or registered health professional.