How many times have you promised yourself, “this time will be different”? You started full of energy, bought new sneakers, planned an ambitious routine—and three weeks later, everything went back to the way it was. If this sounds familiar, know that you are not alone. The difficulty in maintaining physical exercise as part of daily life is one of the most common complaints health professionals hear in consultations, and it has much deeper roots than just a lack of willpower.
The science of human behavior has advanced considerably in recent years and now helps us understand why certain strategies work while others fail. The question is not so much what to do, but how to create the conditions for movement to become something natural in your routine—almost automatic, like brushing your teeth. This article brings together evidence-based guidelines to help you build this path in a realistic, compassionate, and lasting way.
Before starting, an important notice: this content is for educational and general purposes. Each person has a unique clinical history, and any significant change in physical activity routine should be discussed with a doctor, physical educator, or other qualified health professional—especially if you have any pre-existing health condition.
Why are habits so difficult to create (and maintain)?
Habits don’t appear out of nowhere. From the perspective of behavioral neuroscience, they are formed through a cycle that involves a trigger (something that initiates the action), a routine (the behavior itself), and a reward (what the brain receives in return). When this cycle repeats often enough, the action begins to happen more and more automatically.
The problem with exercise is that, initially, the reward is often perceived as distant: improvements in conditioning take weeks to appear, the pleasure during exertion may be low, and the immediate discomfort is real. For the brain, which prefers quick rewards, this is an unfavorable equation.
Furthermore, studies in behavioral psychology suggest that most people overestimate what they can do in the first week and underestimate how much they can progress in six months. This distortion leads to overly ambitious goals at the start—and abandonment when reality doesn’t meet expectations.
The starting point: honest expectations and realistic goals
One of the biggest saboteurs of consistency is starting with too high a bar. The World Health Organization (WHO) recommends, for adults, at least 150 to 300 minutes of moderate-intensity aerobic activity per week, or 75 to 150 minutes of vigorous intensity—plus muscle-strengthening activities on two or more days. You can learn more about these guidelines at How Much Exercise Do You Really Need Each Week?
But reaching that level takes time—and that’s okay. If you’re coming from a sedentary lifestyle, any movement already represents a real gain. Starting with 10 minutes of walking three times a week and progressively increasing is often much more sustainable than starting with daily one-hour workouts.
Some useful questions to define an honest starting point:
- What is my current routine? How many hours a day do I have available?
- What type of movement have I done and enjoyed, even in the past?
- What are my physical limitations today?
- What made me stop in previous attempts?
These answers don’t need judgment—they are just data to help you build something that fits into your real life.
Practical strategies to create the habit
1. Choose something you can tolerate (you don’t need to love it at first)
Research on intrinsic motivation suggests that activities that bring some degree of pleasure or meaning are more likely to become habits. This doesn’t mean you need to love exercise from day one, but it’s worth exploring different modalities before resigning yourself to one you hate.
Dance, swimming, weight training, hiking, cycling, yoga, soccer with friends, jump—the spectrum is huge. Allowing yourself to experiment without pressure can be the first step.
2. Anchor the exercise to something that already exists in your routine
A technique called habit stacking, popularized by behavior researchers, involves associating the new behavior with something you already do automatically. For example:
- “After I get home from work, I’ll change and walk for 20 minutes.”
- “Before my morning shower, I’ll do 10 minutes of mobility.”
The logic is to use an already consolidated habit as a trigger for the new one.
3. Minimize friction as much as possible
The easier it is to start, the more likely you are to begin. Leave your sneakers visible the night before. Choose a gym on the way to work, not on the other side of the city. Have a playlist ready. These details may seem small, but research in behavioral design shows that removing physical and cognitive barriers can significantly increase adherence.
4. Use the “minimum viable” on difficult days
On days when energy is low, motivation has disappeared, and life is heavy, don’t try to do the full workout. Do the minimum viable: 10 push-ups, a lap around the block, five minutes of stretching. The goal is not performance—it’s not breaking the habit chain. Maintaining a minimal presence is often more valuable than perfection alternated with total abandonment.
5. Record and celebrate small victories
Marking on the calendar, using a tracking app, or simply crossing off completed days on paper may seem childish, but it activates the brain’s reward system in a real way. Celebrate each completed week—not with food sabotage, but with something you appreciate: an extra episode of your series, leisure time, a positive message to yourself.
The role of the environment and people around you
We are deeply influenced by the context in which we live. Studies in behavioral sciences suggest that people who exercise with friends, partners, or groups tend to maintain the practice longer. Social commitment creates a level of accountability that goes beyond individual motivation.
This doesn’t mean you need a mandatory partner, but it’s worth considering:
- Running or walking groups in the neighborhood
- Group classes (in-person or online)
- Apps with active communities
- Simply telling someone close about your goal
Additionally, the physical environment matters. If you live in a place without safe sidewalks or green areas, the solution may involve creative adaptations—exercises at home, building stairs, training apps without equipment. There is no single path.
Exercise, mental health, and emotional well-being
The relationship between physical activity and mental health is one of the most studied fields in current medicine. Studies suggest that regular movement can contribute to reducing symptoms of mild to moderate anxiety and depression, improving sleep, increasing self-esteem, and enhancing well-being—although the exact mechanisms are still under research.
It’s important, however, to be honest: exercise does not replace psychological or psychiatric treatment when these are necessary. It can be a valuable ally within broader care, but it is not a universal solution for mental health issues.
If you notice that emotional issues—such as intense anxiety, persistent sadness, deep lack of energy, or difficulty feeling pleasure—are interfering with your ability to move or take care of yourself, seeking support from a psychologist or psychiatrist is an act of self-care, not weakness. In moments of crisis or intense suffering, remember that help is available: the CVV (Centro de Valorização da Vida) is available 24 hours at the number 188, with free calls.
And since body and nutrition go hand in hand, it’s worth exploring how nutrition can support your energy and disposition. This article can help: How to Build a Healthy Plate in Everyday Life.
When to seek a health professional
There are situations where starting or intensifying physical activity requires prior medical evaluation. Seek guidance from a doctor before changing your exercise routine if you:
- Have a diagnosis of cardiovascular disease, diabetes, hypertension, or another chronic condition
- Are pregnant or in recent postpartum
- Have undergone recent surgery or injury
- Feel pain, dizziness, disproportionate shortness of breath, or palpitations during exercise
- Are resuming activities after a long period of sedentary lifestyle with relevant clinical history
- Have doubts about what type of exercise is safe for your body
A physical educator is also a fundamental professional to guide the correct execution of movements, prevent injuries, and adapt the training to your real needs.
Conclusion: movement as an act of care, not punishment
Creating the habit of exercising is rarely a straight line. There will be excellent weeks and weeks when life doesn’t cooperate. The key is not in perfection, but in compassionate persistence—the ability to restart without judgment each time the routine is interrupted.
Movement can be a genuine form of care for your body and mind. It doesn’t need to be spectacular to be valuable. A 20-minute walk, a stretching session before bed, a class you looked forward to during the week—all of this counts, and all of this builds something over time.
Go at your own pace. Ask for help when you need it. And remember that building a lasting habit is, in itself, an achievement that deserves recognition.
This article is for informational and educational purposes only. It does not replace the evaluation, diagnosis, or recommendations of a health professional. Always consult a doctor, physical educator, or other qualified professional before starting or modifying your exercise routine.
