Public-health activity guidelines describe a weekly range, not a pass-or-fail test. The most useful plan is one you can begin at your current level and repeat.
The adult weekly targets
The WHO 2020 guidance recommends 150–300 minutes of moderate-intensity aerobic activity, 75–150 minutes of vigorous activity, or an equivalent combination each week. It also recommends muscle-strengthening work involving major muscle groups on two or more days.
The US Physical Activity Guidelines provide similar ranges and emphasize moving more and sitting less. Activity below the target can still provide benefit, especially for someone starting from little movement.
Older adults should include multicomponent activity that emphasizes functional balance and strength. People with chronic conditions or disabilities should be as active as abilities and conditions allow, with appropriate professional guidance when needed.
What moderate and vigorous mean
Moderate intensity raises breathing but generally allows conversation, though singing becomes difficult. Vigorous intensity makes more than a few words difficult without pausing. These talk-test cues adapt to current capacity better than pace alone.
Minutes can come from walking, cycling, swimming, dancing, active transport, sport, household movement, or accessible equipment. Choose forms that suit your environment, preferences, and body.
Turn the guidance into a week
A beginner week might include five 20-minute walks and two short strength sessions. That is 100 aerobic minutes—below the full range but a real starting point. Add five minutes to selected walks or one extra session as consistency improves.
Someone already active might distribute 150 moderate minutes across three to five days, add two whole-body strength sessions, and include harder work only when appropriate. Avoid increasing total time and intensity sharply in the same week.
Break up long sitting periods with brief movement that fits the situation. The guidance does not require a particular tracker, step count, gym membership, or perfect streak.
Keep safety and context visible
Stop for alarming symptoms and postpone exertional testing when ill, injured, or unusually fatigued. Medication, pregnancy, disability, and health conditions may change the appropriate activity or intensity.
Build the aerobic portion with cardiorespiratory guidance, cover major muscle groups with strength guidance, and connect the habits to Fitness Age improvement without promising a deadline.