Do Something Different: A Simple Habit Experiment That May Help With Weight Loss

Most weight-loss advice focuses on what to eat and how much to exercise.

That can be useful. But it is not the whole story.

Much of daily life runs on autopilot: where we sit, when we snack, what we do when tired, how we respond to stress, how evenings unfold, and what happens after work. These routines can quietly shape eating, movement, sleep, mood, and motivation.

One interesting approach to weight management is called Do Something Different. Instead of starting with diet rules or exercise targets, it asks you to practise gently breaking everyday routines.

The idea is simple:

Each day, do one small thing differently.

Not something about food.
Not something about weight.
Not something about exercise.
Just something different from your usual automatic pattern.

Why might this help?

Research on the FIT–Do Something Different approach suggests that increasing behavioural flexibility may help people loosen the wider routines that maintain unhelpful health behaviours.

In the original FIT–Do Something Different weight-loss study, participants were asked to do something different each day and to undertake novel weekly activities. Importantly, these activities were not food-related or exercise-related. The study found weight loss over time, and greater increases in behavioural flexibility were associated with greater weight loss.

A later Australian randomised controlled trial compared two habit-based approaches: Ten Top Tips, which focused on forming new habits, and Do Something Different, which focused on breaking old habits. Both approaches produced clinically important weight-loss maintenance at 12 months, with about 65% of participants in the active intervention groups losing at least 5% of body weight.

A systematic review of habit-based weight-loss interventions found modest but statistically significant short-term weight-loss benefits, while also noting that larger and longer studies are still needed.

So this is not magic, and it is not a replacement for medical care. But it is a low-risk, practical behavioural experiment that may help some people become less stuck in automatic routines.

The 4-week “Do Something Different” experiment

For the next 4 weeks, your goal is not to go on a strict diet.

Your goal is to practise becoming less automatic.

Each day, choose one small thing to do differently.

The rules

Your “something different” should be:

• Safe

• Legal

• Brief — ideally 5 to 30 minutes

• Different from your normal routine

• Slightly novel or mildly uncomfortable, but not distressing

• Not directly about food, weight, calories, dieting, gym or formal exercise

This last point matters.

The aim is not to create another weight-loss rule.
The aim is to loosen the broader pattern of autopilot.

Examples of things you could do differently

Choose one per day.

Morning routine

• Get ready in a different order.

• Sit somewhere different for breakfast or coffee.

• Brush your teeth with your non-dominant hand.

• Leave the house 10 minutes earlier than usual.

• Listen to different music, radio or silence.

Travel and errands

• Take a different route to work or the shops.

• Park in a different place.

• Walk down a different aisle first when entering a shop.

• Visit a different local park, library, street or shopping area.

• Use public transport for a trip you would usually drive, if practical.

Social patterns

• Say hello to someone you usually only nod to.

• Send a message to someone you have not contacted for a while.

• Ask someone a question instead of giving advice.

• If you usually stay quiet, contribute one comment.

• If you usually talk a lot, deliberately listen more.

Evening routine

• Sit in a different chair.

• Have one evening without television.

• Put your phone in another room for one hour.

• Read something from a genre you would not normally choose.

• Do a small task immediately instead of postponing it.

Thinking and behaviour patterns

• Try a different response to a familiar annoyance.

• Let someone else choose the music, route or activity.

• Write down three things you noticed today.

• Do a small creative task: sketch, write, photograph, build or repair something.

• Spend 10 minutes on something you usually say you “never get around to.”

Once a week: do one slightly bigger different thing

Once per week, choose a larger “different” activity.

Examples:

• Visit somewhere local you have never been.

• Attend a community activity.

• Try a hobby taster session.

• Go to a museum, gallery, garden, market or library.

• Volunteer for a small one-off task.

• Spend half a day without your usual entertainment pattern.

• Have a conversation with someone outside your usual circle.

Again, this is not meant to be extreme. It just needs to be different enough to interrupt autopilot.

How to track it

Keep tracking very simple.

You do not need an app.
You do not need calorie counting.
You do not need a perfect plan.

Use this table:

The most important column is Done?

This is not about doing something impressive. It is about repetition.

What should you notice?

You may notice:

• how automatic some routines are

• how uncomfortable small changes can feel

• how often evenings, stress, boredom or fatigue follow the same pattern

• whether changing one routine makes other choices feel a little easier

• whether you feel more aware of your decisions

The aim is to build the skill of pausing and choosing.

That skill can then spill over into health behaviours.

What this is not

This is not a crash diet.

It is not a substitute for medical treatment.

It is not a promise of weight loss.

It is not suitable as the only approach for everyone.

You should seek medical advice before trying to lose weight if you are pregnant, frail, unintentionally losing weight, have a history of an eating disorder, have complex medical conditions, or are taking medication where changes in weight, appetite, blood pressure or blood sugar may matter.

A simple script for the next 4 weeks

Each morning, ask:

“What is one small thing I can do differently today?”

Each evening, ask:

“Did I do it?”
“What did I notice?”

That is enough.

You are not trying to overhaul your life in one week. You are practising getting out of autopilot.

Why I like this approach

Many people already know a lot about food and exercise. The difficulty is not always lack of information. Often, the difficulty is that daily life has become a set of strong routines.

The Do Something Different approach is appealing because it starts gently. It does not begin by asking for major restriction, intense exercise or perfect motivation. It begins with flexibility.

For some people, that may be the missing first step.

References

Fletcher, Hanson, Page and Pine described the original FIT–Do Something Different weight-loss intervention in Swiss Journal of Psychology in 2011. The intervention focused on increasing behavioural flexibility by asking participants to do something different each day and undertake novel weekly activities that were not food- or exercise-related.

Cleo, Glasziou, Beller, Isenring and Thomas later studied habit-based interventions, including Do Something Different, in a randomised controlled trial of adults with overweight or obesity.

Cleo and colleagues also published a systematic review and meta-analysis of habit-based weight-loss interventions, finding modest short-term benefit while noting the need for longer, well-powered studies.