How to Set Activity Goals Without an All-or-Nothing Mindset

All-or-nothing thinking about exercise has a familiar pattern. A plan is made: five sessions a week, starting Monday. By Wednesday something has got in the way, the week is declared ruined, and the plan is shelved until the next Monday, or the next month. The problem is rarely laziness. It is a goal with only two possible results, perfect and failed.

The official guidelines are often blamed for this, as if 150 minutes were a pass mark. Read closely, they say something quite different. Understanding what the numbers are for, and what they are not for, makes it much easier to set goals that survive an ordinary week.

What the guideline numbers can tell you

They describe a range, not a line. The World Health Organization (WHO) recommends that adults aged 18 to 64 do at least 150 minutes of moderate-intensity activity across the week, or at least 75 minutes of vigorous activity, or a mix, and says that going up to 300 moderate minutes brings additional benefits. US federal guidelines express the adult recommendation as 150 to 300 minutes. Both add muscle-strengthening activity on at least two days.

They tell you that benefits start well below the figure. The WHO’s summary states that doing some physical activity is better than doing none. The UK Chief Medical Officers go further in their guidelines: any activity is better than none, more is better still, and there is no minimum amount required to gain some health benefit. The NHS notes that even one or two sessions a week can reduce the risk of heart disease or stroke.

They tell you short efforts count. Earlier US guidance counted activity only in bouts of at least ten minutes. The current edition dropped that condition, and the UK guidelines likewise say activity can be accumulated in bouts of any length.

They tell you the direction of travel. For someone starting out, the UK guidelines describe the sensible approach as beginning at low durations and intensities and building up over time as the body adjusts.

What the numbers cannot tell you

They cannot tell you what is right for you this month. These are recommendations for populations of adults. They do not know about your shifts, your knees, your caring duties or your winter. People with long-term conditions, disabled people, and women who are pregnant or have recently given birth are covered by the same broad guidelines but often with adapted advice; see adapting activity plans to your abilities and circumstances.

They cannot grade your week. Nothing in the guidelines says that 140 minutes is a fail, or that a week of 60 minutes was wasted. The dose and the benefit rise together gradually; there is no cliff edge at 150.

They cannot tell you what you will keep doing. A figure says nothing about enjoyment, convenience or company, which are the things that decide whether an activity lasts. The US Centers for Disease Control and Prevention (CDC) advises choosing activities you enjoy that match your abilities for exactly this reason.

They do not turn a quiet day into a failure. The minute figures are weekly totals. UK guidance does encourage adults to aim to be active every day, but it also says the minutes can be built up in bouts of any length, or even in one or two sessions a week, and nothing in it says a missed day cancels the rest.

A goal with three levels

One practical way to turn this into a plan is to set three versions of the same goal instead of one.

• The floor is what you will do in a bad week: when you are tired, busy or the weather is foul. It should be small enough to feel almost too easy.
• The usual is what a normal week looks like. It should fit your real diary, not your ideal one.
• The stretch is what you do when things are going well. It is optional by definition.

A week that reaches the floor is a success. That one rule removes the “ruined week”.

Your own three levels will look different. Someone already active might set a floor of two sessions and a stretch of five. Someone managing a fluctuating condition might define levels by how they feel on the day, in a way agreed with their clinician.

Rewriting common all-or-nothing rules

It can help to write down the rule you have been using and put a more accurate one beside it.

• “If I can’t do the full session, there’s no point.” Shorter bouts count, and guidelines no longer set a minimum length.
• “I missed Monday, so I’ll start again next week.” The target is a weekly total. Tuesday is as good a day as any.
• “It has to be hard to be worth it.” Moderate activity, such as brisk walking, counts in full towards the recommendations; see exercise intensity in everyday language.
• “I’ve had two weeks off, so I’m back to zero.” You are back to your floor, which is why it exists.
• “Real exercise means a gym.” The NHS lists brisk walking, dancing and pushing a lawn mower as moderate activity, and carrying heavy shopping as muscle-strengthening.

Tracking without turning it into a test

The CDC suggests keeping a simple record of weekly activity. A record is useful when it shows you patterns: which days tend to work, what gets in the way. It becomes unhelpful when it is used as a scoreboard.

A few ways to keep it on the helpful side:

• Review by the week, not the day.
• Record what you did, not what you missed. A tick is enough.
• Note one line on why a good week was good.
• If a wearable’s targets make you feel worse, change the targets or turn the notifications off. The device’s default number is a setting, not a guideline.

The CDC’s advice for low-energy periods is also worth borrowing: schedule activity for the times of day or week when you tend to have the most energy, and increase gradually. Our articles on building a small habit and planning a less rushed week cover the planning side.

When life interrupts

Illness, a new baby, a deadline, a bereavement, a house move: every long-term routine gets interrupted. Plan for that in advance by deciding what restarting looks like. Usually it means returning to the floor for a week or two and building back up, the same gradual approach the guidelines describe for beginners.

If the interruption was an illness, an operation or a new diagnosis, it is reasonable to ask a health professional how to resume before picking up where you left off.