It is an all-too-familiar cycle: As the New Year starts, we are brimming with motivation, promising ourselves that this is the year we finally get fit. We go to the gym regularly, diligently track our workouts and fill our schedules with fitness classes two weeks in advance. But then reality sets in. Life gets busy, motivation drops, and our fitness goals start fading into the background. For many, that ultimate surrender comes around ‘Blue Monday‘ — the third Monday in January. This is when we tend to crumble under the weight of unrealistic expectations and fading motivation, and finally consign our fitness goals to history.

The good news is that this vicious cycle can be broken. Behavioral science is getting ever closer to understanding what makes us kickstart and maintain an exercise routine, and what derails or slows down our efforts to form new habits — and we can use that knowledge to our advantage.

tiny habits, a concept popularized by the Stanford behavioral scientist B.J. Fogg — scale the behavior down to something so small it feels almost effortless.

“Psychologically, starting small works because it avoids triggering the brain’s threat response, which is activated when the perceived cost of a change is high. Tiny, manageable goals create early mastery experiences that boost dopamine and strengthen self-efficacy: the belief that ‘I can do this,’ Dr. Michael Swift, a British Psychological Society media spokesperson and clinical director at Swift Psychology, a counselling service in Birmingham, U.K., told Live Science by email. “Even a few minutes of movement is enough to begin building the neural pathways that underpin habit formation.”

Top tip: Forget the marathon: start with a stroll or a 15-minute bodyweight workout in your living room. The goal here is not to train like an athlete from day one, but to successfully repeat a new behavior. Consistency beats intensity every time in the habit-formation phase.

“People tend to set the bar really high when they are starting a new exercise routine. It is important to choose a program that you will enjoy, and that is going to fit into your lifestyle and be sustainable long term,” Michelle D’Onofrio, a Pilates instructor and co-founder of Yatta Studios, a chain of boutique exercise studios in the U.K., told Live Science by email.

It is also worth noting that this slow-burn approach has tangible benefits for your muscular health and general well-being. “Your body adapts to new physical stress through progressive overload — gradually increasing intensity, duration, or frequency so muscles and cardiovascular system can adapt safely,” D’Onofrio said.

If you do too much exercise too soon, you are more likely to struggle with brutal bouts of DOMS (Delayed Onset Muscle Soreness) and even painful injuries.

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Health Psychology Review. This phenomenon is called “implementation intention.”

Top tip: Move exercise from a vague “I should” to a non-negotiable appointment. Use time blocking — put your exercise session in your daily calendar, just like a meeting with your boss or a school class, then set a reminder. Simple yet effective.

“Too often people think a gym session has to be a massive time commitment, or that they need to overhaul their lives completely to exercise. That’s rarely realistic and often backfires,” Steve Chambers, a senior personal trainer and gym manager at Ultimate Performance in Manchester, U.K., told Live Science by email.

“Start by mapping out your real-world schedule (work hours, family, social commitments, sleep, stress etc), then build a custom plan that fits around your life, not the other way around,” Chambers advised.

A close-up picture of a young woman writing down her fitness goals in a notebook while sitting down next to a set of dumbbells

(Image credit: Getty Images)

When planning a new activity, use habit stacking. In essence, this is the practice of piggybacking a new exercise routine onto an existing habit. For example, “After I get home from work and put my keys down, I will immediately change into my workout clothes.” This method uses the established neural pattern of the old habit as a runway for the new one.

“Habits form through the cue-routine-reward loop. You are more consistent when exercise is tied to a stable anchor such as ‘after breakfast’ or ‘after work’,” D’Onofrio said.

Also, tie in temptation bundling — combine doing something you ought to do with doing something you love. “This could mean that you only listen to your favourite playlist or podcast whilst doing your workout,” Rex Fan, a lead behavioural insights advisor at Bupa Health Clinics in the U.K., told Live Science by email.

This also means that you should remember to reward yourself. “When you structure in your workout, why not also structure in something nice to look forward to afterwards? It could be anything from a nice coffee to a phone call with a friend,” Fan said.

Dr. Nicolas Berger, a senior lecturer in exercise physiology at Teesside University in the U.K., told Live Science by email: “Dancing on your own, with your friends, or partner is a brilliant way to improve coordination and cardiovascular fitness, which is low impact but good for your joints and bones. It also brings massive social benefits, improving mental health as well as self-confidence. It’s one of the best ways to do exercise without feeling like it is.”

If going to a Zumba class or hopping on a trampoline does not appeal to you, consider some of the less strenuous activities you can do in the great outdoors. “Is there a sea or lake nearby? Rent a kayak or rowing boat, even a pedalo. This all helps with upper body, lower back and core strength,” Berger said. “Any outing where you have to walk a lot and maybe carry a backpack is beneficial. If it is interesting, you will not notice it is exercise.”

All in all, by making exercise easy, accessible and rewarding, we work with the brain rather than against it, giving new routines the best possible chance to take root, Swift concluded.

International Review of Sport and Exercise Psychology, social support can have a small but significant impact on helping you stick to your new exercise routine long-term. Whether it is the local running club, a guided Pilates session or working out with your gym buddies, having someone to check in with you on a regular basis can be a huge motivator. It does not even have to be someone you are particularly close to.

“Sharing your intentions with someone you trust, like a fitness coach or health adviser, can help you to stay closer to your goals. Speaking to a health adviser may also help you to prepare for the physical demands of a new workout, depending on your individual health,” Fan said.

Top tip: Train with a partner (friend, spouse) or have a regular “gym buddy.” Join a fitness class, whether in your local leisure center or online. Start a fitness blog. The options are endless!

“If you know someone’s counting on you, you are more likely to show up. Having a system of external accountability dramatically raises the odds that you won’t just ‘fall off the wagon,” Chambers concluded.