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Your Post-Holiday Brain: The Science Behind the Summer Slowdown

That fog on your first days back at work isn't a failing — it's your brain recalibrating. The science of the post-holiday slowdown, and how to use it well.

Sean Versteegh, Clinical Psychologist / Director at 3 Big Things

Sean Versteegh

Clinical Psychologist / Director

· 2 min read

A flat illustration of a person at a desk with a flowering pōhutukawa growing from their head and a summer beach scene spilling from their computer.

Have you ever sat down at your desk after a long break, only to find you've forgotten your login password, typing a simple email feels like solving an advanced physics problem, and you can't remember what it is you actually do at work? This temporary cognitive fog is a natural part of adjusting back to work — and it might even serve a purpose in resetting and optimising your brain.

The cognitive adjustment period: what science tells us

Research suggests that the brain needs time to transition from relaxation back to structured, task-oriented activities. A study published in Psychosomatic Medicine found that extended breaks, such as vacations lasting longer than 10 days, help lower cortisol levels (a stress hormone), promoting better mental health and recovery. However, the first few days back at work can be marked by challenges in focus and productivity as your brain readjusts.

Regular breaks, even shorter ones, have been shown to improve cognitive function and focus over time. A meta-analysis in Neuroscience & Biobehavioral Reviews highlights that rest promotes neural plasticity — the brain's ability to adapt and form new connections — which is crucial for creativity and problem-solving.

The counterintuitive science of post-holiday productivity

Though returning to work after a significant break might feel unproductive at first, the long-term benefits are worth noting. Studies show that vacations contribute to better overall wellbeing, improved focus, and higher engagement at work. For example, research into workplace recovery strategies indicates that employees who take substantial time off often return with enhanced resilience and problem-solving skills.

Incorporating breaks into the work routine has also been linked to sustained productivity. By allowing the brain to rest and recharge, individuals can approach tasks with renewed energy and creativity, reducing the risk of burnout.

Supporting the transition to the new year

At 3 Big Things, we integrate these insights into all our services. Our approach helps managers and teams navigate the transition back to work effectively, transforming temporary cognitive adjustments into opportunities for growth and innovation.

Our supervision services help teams:

  • Understand and embrace the natural recalibration process
  • Use the post-holiday fog as a catalyst for creative problem-solving
  • Develop sustainable work habits that capitalise on the benefits of rest and recovery

The new year opportunity

With the right guidance and support, this adjustment period can become a launchpad for creativity, productivity, and a successful year ahead. Supervision provides a structured space to set clear goals, align with priorities, and transform challenges into opportunities for growth.

Want to learn how our evidence-based supervision services can help your organisation navigate this transition? Contact us at contact@3bigthings.co.nz.

Sean Versteegh, Clinical Psychologist / Director at 3 Big Things

Written by

Sean Versteegh

Clinical Psychologist / Director

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