Temptation Bundling: Pairing a Habit With Something You Want
Temptation bundling means allowing yourself something you enjoy only while doing a habit you tend to put off. In the original gym study, keeping gripping audiobooks for the gym raised visits by 51% at first, though the effect faded after a holiday break. A much larger follow-up found a smaller but longer-lasting gain.
Below: what the two studies found, why an immediate reward matters more than most people think, how to set up a bundle of your own, and where the evidence runs out. Each study is linked so you can check the numbers.
What is temptation bundling?
Temptation bundling is pairing a "want" (something pleasant now, like a gripping novel or a favourite show) with a "should" (something good for you later, like exercise or chores), and only allowing the want while you do the should. The treat makes the chore more pleasant, and wanting the treat gives you a reason to start the chore.
The idea comes from the behavioural scientist Katherine Milkman and colleagues, who named and tested it in a 2014 study. Their starting point was that most people have two kinds of self-control problem at once:
- Shoulds we put off, because their rewards are far away: exercise, filing, study, cleaning.
- Wants we overdo, because their rewards are immediate: another episode, another chapter, another scroll.
A bundle tackles both at once. The should gets an immediate reward attached, and the want gets a limit. "I only listen to this thriller at the gym" makes the gym more appealing and stops the thriller eating your evening.
The key word is only. If the podcast is available any time, it stops pulling you to the gym. The restriction is what gives the bundle its force.
The gym study: 51% more visits, then a fade
In the original experiment, 226 people at a university were split into three groups for about nine weeks. People whose audiobooks were locked on an iPod kept at the gym visited 51% more often than the control group at first. People who were only encouraged to save their audiobooks for the gym visited 29% more. Both effects shrank after a Thanksgiving break.
The study is Milkman, Minson and Volpp, Management Science, 2014, open to read in full. The three groups were:
- Full bundle. Four audio novels of their choice, on an iPod that stayed at the gym. They could only listen while working out.
- Encouraged bundle. The same audio novels on their own device, with the suggestion to listen only at the gym. Nothing stopped them listening elsewhere.
- Control. A bookshop gift card of equal value, and no suggestion.
The gains came mainly in the seven weeks before the university's Thanksgiving break, when the gym was closed. After the break, the difference between groups largely disappeared. The authors offer two reasons: a forced pause from the novels made them less gripping, and past research shows gym habits tend to wear off after holidays. Their suggested fix is a reason to come back after a break, such as the next chapter waiting at the gym. Breaks and life changes have their own research; see the fresh start effect and why habits break when life changes.
Two other findings are worth knowing:
- People liked the idea. After the study, 61% of participants chose to pay for gym-only access to audiobooks.
- It helped more for people who enjoyed it. The more someone enjoyed their first workout with an audiobook, the larger the boost they got from the bundle.
The follow-up with 6,792 gym members
A much larger test ran with members of a US gym chain. People who got a free audiobook plus a nudge to save it for workouts were 10 to 14% more likely to work out in a given week, and the effect lasted up to 17 weeks after the four-week programme ended. The nudge itself added only a little beyond the free audiobook.
The study is Kirgios and colleagues, Organizational Behavior and Human Decision Processes, 2020. It had three groups: an audiobook with encouragement to bundle, an audiobook alone, or neither.
Two points stand out:
- The effect was smaller than in 2014, and it lasted longer. A 10 to 14% gain is modest, but it held well after the programme ended, which the original study could not show.
- The explanation mattered less than the audiobook. Giving people an audiobook alone did much of the work. The authors suggest that handing someone an audiobook as part of an exercise programme already hints that they should listen while exercising.
Put the two studies together and the honest summary is: bundling a treat with a habit can raise how often you do it, by a useful but not dramatic amount, and the size of the gain depends on how much you enjoy the treat.
Why an immediate reward keeps you going
People keep up long-term goals mainly because of how the activity feels now, not because of the benefit later. In studies of New Year's resolutions, studying and exercise, enjoyment in the moment predicted who kept going; distant benefits such as health did not, even though people said those benefits were why they started. Temptation bundling adds that missing now-reward.
The finding comes from Woolley and Fishbach, Personality and Social Psychology Bulletin, 2017. Across five studies, immediate rewards were more strongly linked with persistence than delayed ones, over one week and over three months. Delayed rewards seemed to drive setting the goal; immediate rewards drove sticking with it.
A second paper by the same authors found that the timing of a reward changes how an activity feels. In lab experiments, receiving a reward sooner rather than later raised people's intrinsic motivation, their sense that the activity itself was worth doing (Woolley and Fishbach, 2018). The authors explain this as a closer link in the mind between the activity and its reward.
That is the logic of a bundle. The benefit of exercise arrives in months; the next chapter of the audiobook arrives today. It also fits the cue-routine-reward model in the habit loop, where the reward is what makes a routine worth repeating.
Temptation bundling examples
A good bundle pairs a treat you already want with a habit that fits alongside it, and keeps the treat for that habit only. Audio fits movement and chores; a show fits folding laundry or an exercise bike; a favourite coffee fits a desk task. The treat should not undo the habit, so skip pairings like dessert with a workout.
Pairings where the two fit together physically (our suggestions; only the audiobook-and-gym pair has been tested):
- Audiobook or podcast series — only while walking, running, cleaning or cooking.
- A show you are hooked on — only on the exercise bike or while ironing.
- A favourite playlist — only for the weekly tidy or the gym.
- A good coffee or tea — only while doing the admin you avoid: bills, email, forms.
- A café you love — only for the study session or the writing hour.
- A phone call with a friend — only while on a walk.
Pairings to avoid:
- Treats that cancel the habit. Crisps while cycling, or a cigarette after a run.
- Treats that split your attention. A gripping show during work that needs thought.
- Treats you do not care about much. The bundle only pulls as hard as the treat does.
How to set up a temptation bundle
List two or three treats you often overdo and two or three habits you put off. Match them where they fit together, then make a rule: this treat, only during this habit. Make the rule easy to keep, for example by keeping the treat where the habit happens. Then write it as an if-then plan and record each time you do it.
- List your wants. What do you reach for without effort? A series, a podcast, a type of music, a drink, a place.
- List your shoulds. What keeps slipping? Be specific: "walk 20 minutes", not "be healthier".
- Match them. Look for pairs where you can do both at once without one spoiling the other.
- Make the rule hard to break. The locked iPod beat encouragement in 2014. Keep the headphones in your gym bag, save the series to a device you only use on the bike, or download the podcast to your walking playlist only.
- Write it as a plan. "When I put on my walking shoes, I will start the next episode." That is an implementation intention, a format that has its own strong evidence.
- Record it. Tick the habit each time. A written record of progress helped people reach goals in a review of 138 experiments.
If exercise is your should, the workout consistency calculator shows what a bundle that gets you there twice a week adds up to over a year.
When temptation bundling stops working
Bundles fade. In the original study, the extra gym visits largely disappeared after a holiday break, and the effect depended on how much people enjoyed the pairing. Plan for the day the treat runs out: have the next book or series ready, and after a break, restart the bundle on purpose rather than waiting for the urge to return.
Three common reasons a bundle stops pulling:
- The treat runs out. A finished series leaves a gap. Keep a queue.
- A break interrupts it. Holidays, illness or travel knock the pairing out of your week. The 2014 data show exactly this.
- You break the rule. Once the podcast is on at home too, the gym loses its hold. If that happens, either tighten the rule or pick a new treat.
A bundle that fades has not failed. Its job is to help you do the habit often enough, early on, for the habit to start running on its own. Studies put that at about two months for a daily habit; how long it really takes to form a habit covers the range.
What the research does not say
It does not show that temptation bundling works for every habit or every person. Both main studies were about gym visits with audiobooks. The gains were useful rather than large, and the first study's effect faded within weeks. No study here tested bundling for studying, chores or diet, although the idea may carry over.
A few limits worth stating plainly:
- Two studies, one behaviour. Both tests measured gym attendance. Other pairings are reasonable guesses, not tested results.
- Much of the effect may be the treat itself. In the 2020 study, the audiobook alone did most of the work; the instruction to bundle added little.
- The early numbers are the best case. The 51% figure describes the first weeks of the 2014 study, before the break.
- The immediate-reward research is not about bundling directly. Woolley and Fishbach studied enjoyment and persistence in general. Linking it to bundling is our reading.
- A bundle does not fix a habit you do not want. It makes a chore easier to start; it does not create a reason to do it.
Frequently Asked Questions
What is temptation bundling?
It is a way to make a dull habit more appealing by pairing it with something you enjoy and keeping that treat for the habit only. For example, you only listen to a favourite podcast while walking. The treat makes the habit more pleasant and gives you a reason to start.
Who came up with temptation bundling?
The behavioural scientist Katherine Milkman at the Wharton School named and tested it, with Julia Minson and Kevin Volpp, in a study published in Management Science in 2014. It has since been popularised by books such as Atomic Habits.
Does temptation bundling actually work?
In two gym studies, yes, with limits. The first found 51% more gym visits at first, fading after a holiday break. A follow-up with 6,792 people found a 10 to 14% higher chance of a weekly workout that lasted up to 17 weeks after the programme ended.
What are some temptation bundling examples?
Only listening to an audiobook while running, only watching a favourite show on the exercise bike, only drinking a special coffee while doing paperwork, or only calling a friend while on a walk. The best pairs fit together physically and do not undo each other.
Is temptation bundling the same as habit stacking?
No. Habit stacking uses something you already do as the cue for a new habit ("after coffee, I journal"). Temptation bundling attaches a treat to a habit to make it more rewarding. They combine well: the stack decides when you start, the bundle makes starting more appealing.
Why do immediate rewards help habits?
Studies of resolutions, study and exercise found that enjoyment in the moment predicted who kept going, while distant benefits did not. People set goals for the long-term payoff but stick with them for how the activity feels today. A bundle adds a reward you get right now.