There are days when the proper session is clearly not happening.
You slept badly, work ran over, something else needed doing and suddenly it is eight o’clock. The gym bag is still by the door and the hour you thought you had has disappeared.
The workout often still exists in theory. You could do it if you had a bit more energy and perhaps a different life for the next ninety minutes.
What you actually have is ten minutes and very little enthusiasm.
This is where many plans fall apart because whatever is still possible looks pointless beside the session you intended to do. Ten minutes gets compared with an hour, loses badly and becomes nothing.
Less still counts
The World Health Organization recommends that adults aim for at least 150 to 300 minutes of moderate-intensity aerobic activity each week. It also says that some physical activity is better than none and that people who are currently inactive should begin with small amounts.[1][2]
That is a useful way to think about a bad day.
The weekly target matters because enough activity brings substantial health benefits. Falling short of the target on a particular day does not make the activity you can do worthless.
Research on daily steps gives us a similar picture. A meta-analysis brought together data from fifteen cohorts involving more than 47,000 adults. People in the higher step-count groups had a lower risk of dying during the follow-up period than those in the lowest group, although the association levelled off at different points for younger and older adults.[3]
This was observational research, so it cannot prove that a particular number of steps caused the difference. It also gives us no precise minimum for an individual person, but it does show why movement is better understood as a range than as a pass or fail.
Ten minutes is still ten minutes. One set is still one set. A walk remains worth doing even though the run you planned would have been better.
The full version needs more than an hour
A proper workout usually asks for quite a lot around the workout itself.
You need the clothes, somewhere to do it, perhaps a journey there and back, time for a shower and enough room in your head to begin. None of this is a problem on a good day because the time and energy are available.
Some days you only have twenty minutes not an hour. You could do something at home but cannot face driving to the gym. A walk feels manageable and running does not.
The plan becomes a barrier when it holds you to all or nothing and one missing ingredient means a definite fail.
Illness, injury and genuine exhaustion (or just feeling too tired today) need treating sensibly. Rest may be the useful choice on those days. There are plenty of less dramatic days though, when you have enough in the tank to do something smaller.
It helps if the plan has already allowed for these types of days.
Give the day three versions of the plan
For anything you do regularly, decide what the normal, reduced and minimum versions look like.
Normal is the session you usually intend to do.
Reduced is a shorter session that still does some of the training you planned.
Minimum is the least that makes sense on a day when things are not going your way.
A normal walk might be forty-five minutes, with twenty minutes as the reduced version and five as the minimum. A strength session could become two main exercises on a busy day and one set of each when even that feels ambitious.
The plan will depend on what you do and why you do it. Someone training for a competition will draw the lines differently from someone trying to move more often.
There is some evidence that reduced strength training can still produce progress. A systematic review found six studies in resistance-trained men where a single set, performed between one and three times a week, produced significant increases in one-repetition maximum strength. The review’s practical conclusion was about one set of six to twelve repetitions at roughly 70 to 85 per cent of one-repetition maximum, performed two or three times a week with high effort over eight to twelve weeks.[4]
Those details matter because this was still serious training. It involved trained men, fairly heavy loads and sets taken close to failure.
So a reduced session can do more than preserve the feeling of having exercised. It can still contribute to strength, provided the work is appropriate and repeated often enough.
The minimum version still has a job. Five minutes of walking does not need to produce the same result as a full training session, but it gives you a useful way to respond to the time and energy that you have.
Small is there for the days that need it
The obvious concern is that the minimum becomes the answer every day.
That will eventually matter if you are trying to become much stronger, fitter or faster. Progress needs enough work over time, and five minutes cannot indefinitely provide the training required for every goal.
You can usually tell the difference by looking beyond the one bad day. Using the minimum occasionally means the plan has some flexibility. Using it for several weeks suggests that the normal version may no longer fit.
Perhaps work has changed. Perhaps you are recovering badly, the programme asks for too much time, or you have lost interest in the goal. Those are good things to notice because they may require a change to the overall plan rather than another day of forcing yourself through it.
For today, though, five minutes is allowed to remain five minutes.
Decide before the negotiation starts
Work out the versions while you are feeling in the mood.
If your normal walk is forty-five minutes, decide what you will do when you only have twenty and what still feels manageable when you have five. Do the same for the gym, running, yoga or whatever else you regularly do.
The minimum needs to be easy to begin because it is meant for the point in the day when you are already negotiating with yourself. A minimum workout that requires special clothes, a drive across town and forty minutes has probably missed the point.
Twenty to eight in the evening is a poor time to invent alternatives. You are tired, the day has already gone wrong and doing nothing has started to sound entirely justified.
An option you chose earlier is easier to use. You look at the day, pick the version that fits and carry on.
Rest belongs among those options as well. Sometimes you will decide that recovery is the most useful thing you can do, do that and allow yourself to appreciate it. That decision becomes easier when every change of plan does not have to be interpreted as failure.
What counts
Fitness gives us plenty of numbers to judge ourselves by. Weight, pace, distance, repetitions, minutes and streaks can all tell us something useful.
They are less helpful when they convince us that keeping going while life happens has no value.
Some days you will do the full session. Some days you will do less, and occasionally you will rest because that is what the day requires.
A plan that expects to last for years needs room for all three because the years themselves will contain all three. The alternate versions give an ordinary bad day somewhere to go, which is often enough.
Keep starting.
References
[1] World Health Organization. Physical activity fact sheet, 26 June 2024.
[2] World Health Organization (2020). WHO Guidelines on physical activity and sedentary behaviour.
[3] Paluch, A. E., et al. (2022). Daily steps and all-cause mortality: a meta-analysis of 15 international cohorts. The Lancet Public Health, 7(3), e219 to e228.
[4] Androulakis-Korakakis, P., Fisher, J. P., and Steele, J. (2020). The minimum effective training dose required to increase 1RM strength in resistance-trained men: a systematic review and meta-analysis. Sports Medicine, 50(4), 751 to 765.