Stress after rest: how to combat post-holiday fatigue

Introductory note: this article was previously published and has been updated according to scientific and divulgative criteria. It provides general information and does not replace the advice of a healthcare professional.

In brief

• It is common to feel fatigue, restlessness, or difficulty concentrating after a period of rest: the positive effects of a vacation often fade within a few days.
• Evidence indicates that adequate sleep, regular physical activity, and a diet rich in micronutrients can mitigate transient symptoms of stress and fatigue.
• Multi-micronutrient or specific supplements (some B vitamin complexes, magnesium, vitamin C) show variable results and depend on baseline nutritional status and clinical context.
• Many studies are observational or small trials: recommendations must be tailored to the individual and evaluated with clinical attention.

Abstract: what does science say?

Definition: the so-called "post-vacation blues" refers to a transient set of physical and emotional symptoms that some people experience when returning to daily activities after a period of rest: fatigue, poor concentration, irritability, insomnia, or mild melancholy. The available evidence does not describe a single nosographic disorder, but rather variations in well-being related to behavioral factors (sleep, physical activity, diet) and contextual factors (workload, personal expectations).

What the evidence shows: meta-analyses and reviews indicate that vacations produce measurable improvements in well-being, but these tend to diminish rapidly after returning to work. Studies on micronutrients show that supplementation with B vitamin complexes can reduce perceived stress levels in healthy or at-risk populations; evidence on magnesium and vitamin C suggests possible effects on anxiety symptoms, stress response, and physiological parameters, but with variable results depending on the study design and population. Regular physical activity is associated with a reduced risk of depression and improved mood outcomes in the medium term. The amount of sleep recovery needed to restore performance and mood depends on the nature and duration of sleep deficit.

Context and dose dependence: the reported effects are influenced by pre-existing nutritional status (those who are deficient are more likely to benefit from supplementation), the composition and dose of the supplement, the duration of the intervention, and concomitant behavioral factors (e.g., physical activity, sleep quality, alcohol use). Many trials use combined formulations or small samples; therefore, the observed effect is not automatically generalizable.

Interpretive limitations: reviews warn against confusing association with causality; different results come from observational studies or RCTs with heterogeneity in dosages and outcomes. It is necessary to interpret with caution and individualize the practical application of the evidence.

What it means in practice

Returning to routine after a vacation may take a few days for sleep, appetite, and psychophysical rhythm to rebalance. The strategies emerging from the literature are not therapeutic but guiding: prioritize sleep (restore regular hours), promote a varied diet rich in fruits, vegetables, whole grains, and lean proteins, gradually reintroduce exercise, and limit alcohol and excessive meals. Regular physical activity is associated with mood improvements and a reduced risk of depressive disorders in the medium term [7].

From a nutritional perspective, evidence suggests that supplementing any deficiencies (e.g., B vitamins or magnesium) can help those with suboptimal nutritional status, but the effect is less clear in people with already adequate nutritional status [2][4]. Some studies with multinutrient formulas show benefits in samples with emotional problems or post-stressful events; however, results vary with the product's composition and the studied population [3].

Finally, sleep recovery is not always immediate: research on neurobehavioral recovery shows that the speed of restoration depends on the type of deprivation (total vs. chronic) and may require several nights to return to previous levels; work-related factors and additional stress can prolong the adaptation phase [8].

Sleep and recovery

Sleep is central to recovery: the microstructure of rest and the duration of awakenings affect attention, alertness, and mood. Laboratory studies and biomathematical models show that after acute deprivation, performance can return close to baseline in a few nights, while chronic deprivation requires longer and sometimes incomplete recovery after a few nights of "catch-up" sleep [8]. This means that restoring a regular sleep rhythm (fixed times for going to bed and waking up) is a priority measure to reduce the feeling of post-vacation fatigue.

Nutrition and micronutrients

B vitamins are involved in energy metabolism and neurotransmitter synthesis; reviews show reductions in perceived stress with B complex supplementation in some contexts, especially in individuals with risk or marginal nutritional status [2]. Magnesium is involved in many cellular reactions, and some reviews suggest a possible benefit on anxiety and mood, although the quality of studies is heterogeneous [4]. For vitamin C, there is evidence of effects on physiological parameters related to stress and some aspects of mood in selected populations [6]. However, the use of supplements should be evaluated on a case-by-case basis, preferring the correction of documented deficiencies rather than generalized intake.

Physical activity and environment

Regular physical activity and exposure to natural environments promote mood recovery and resilience to stress. Epidemiological reviews and meta-analyses show a reduction in the risk of depression onset associated with higher levels of physical activity in observational follow-up [7]. Even short walks in green environments can provide immediate benefits to mood; however, the effect is more lasting if the activity becomes habitual.

Key takeaways

• "Post-vacation blues" is common and generally transient; most cases improve within a few days.
• Restoring regular sleep schedules and gradually increasing physical activity are effective and risk-free strategies.
• Diet quality and baseline nutritional status influence the likelihood of benefiting from vitamin or mineral supplementation.
• Evidence supports the benefits of B vitamin complexes on perceived stress, but does not guarantee uniform effects on anxiety or depression in all contexts [2].
• Combined interventions (diet, sleep, movement) are more consistent with sustainable recovery than isolated solutions.

Limitations of evidence

Important distinction: many available studies are observational, others are clinical trials with limited samples or combined formulations. Observational studies can document associations (e.g., physical activity and lower risk of depression) but do not prove a unique causal relationship [7]. Reviews on micronutrients report heterogeneity in doses, duration, and measured outcomes: this limits the ability to generalize results and establish standardized recommendations [2][3][4].

Recurring methodological problems: small sample sizes, absence of baseline nutritional status measures, use of multi-ingredient formulations that prevent attributing the effect to a single component, and short follow-up times. Furthermore, subjective outcomes (e.g., perceived stress) are sensitive to response bias. For these reasons, any practical application requires an individual clinical evaluation and, if necessary, laboratory tests before starting targeted supplementation [4][5][9].

Editorial conclusion

Discomfort after returning from a period of rest is a real and largely transient phenomenon. Scientific evidence indicates that simple, low-risk measures—restoring regular sleep schedules, gradually resuming physical activity, a varied diet, and controlling any nutritional deficiencies—are most consistent with rapid and sustainable recovery. Micronutrient supplementation may play a role when documented deficiencies exist or in particular clinical contexts, but it is not a universal solution. In cases of intense, persistent, or debilitating symptoms (acute anxiety, panic attacks, depression), it is necessary to consult a healthcare professional for a thorough evaluation and a dedicated therapeutic plan.

Editorial note

This text is an update of a previous article and reflects a synthesis of the most relevant peer-reviewed literature on the topic. Purpose: to inform clearly and transparently. It does not replace clinical judgment. For individual situations, consult a doctor or health professional.

Scientific research

The sources listed below are cited in the text and selected for their relevance to the topic: effects of rest periods on well-being, the role of sleep in recovery, the effectiveness of micronutrients (B vitamins, magnesium, vitamin C), and the impact of physical activity on mood. DOIs are verified and clickable.

1. De Bloom J, Kompier M, Geurts S, De Weerth C, Taris T, Sonnentag S. Do We Recover from Vacation? Meta-analysis of Vacation Effects on Health and Well-being. J Occup Health. 2009;51(1):13–25. https://doi.org/10.1539/joh.k8004. [cited in text: effects of vacations and duration of benefit]
2. Young LM, Pipingas A, White DJ, Gauci S, Scholey A. A systematic review and meta-analysis of B vitamin supplementation on depressive symptoms, anxiety, and stress: effects on healthy and 'at-risk' individuals. Nutrients. 2019;11(9):2232. https://doi.org/10.3390/nu11092232. [cited in text: B vitamin complexes and stress]
3. Jacka FN, et al. Multinutrients for the Treatment of Psychiatric Symptoms in Clinical Samples: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients. 2020;12(11):3394. https://doi.org/10.3390/nu12113394. [cited in text: evidence on multinutrient formulas]
4. Boyle NB, Lawton C, Dye L. The effects of magnesium supplementation on subjective anxiety and stress — a systematic review. Nutrients. 2017;9(5):429. https://doi.org/10.3390/nu9050429. [cited in text: review on magnesium and anxiety]
5. Tarleton EK, Littenberg B, MacLean CD, Kennedy AG, Daley C. Role of magnesium supplementation in the treatment of depression: a randomized clinical trial. PLoS ONE. 2017;12(6):e0180067. https://doi.org/10.1371/journal.pone.0180067. [cited in text: clinical trial on magnesium]
6. Ghiadoni L, et al. The influence of vitamin C on the interaction between acute mental stress and endothelial function. Eur J Appl Physiol. 2017; doi:10.1007/s00421-017-3655-4. https://doi.org/10.1007/s00421-017-3655-4. [cited in text: vitamin C and physiological stress response]
7. Schuch FB, Vancampfort D, Firth J, et al. Physical activity and incident depression: a meta-analysis of prospective cohort studies. Am J Psychiatry. 2018;175(7):631–648. https://doi.org/10.1176/appi.ajp.2018.17111194. [cited in text: physical activity and risk of depression]
8. Van Dongen HPA, et al. The dynamics of neurobehavioral impairment and recovery sleep: improved biomathematical modeling for fatigue risk management in operational settings. Front Environ Health. 2024; https://doi.org/10.3389/fenvh.2024.1362755. https://doi.org/10.3389/fenvh.2024.1362755. [cited in text: dynamics of sleep recovery]
9. JBI Evidence Synthesis. The impact of essential fatty acids, B vitamins, vitamin C, magnesium and/or zinc consumed as dietary supplements on female stress and anxiety levels. JBI Evid Synth. 2017; doi:10.11124/JBISRIR-2016-002965. https://doi.org/10.11124/JBISRIR-2016-002965. [cited in text: review on micronutrients and stress]