Background: Sedentary behavior and insufficient physical activity are common
problems and are associated with an increased risk of obesity and cardiometabolic
disease. Exercise snacks, consisting of short bouts of physical activity performed
several times during the day, have been proposed as a practical way of increasing
daily physical activity. Methods: This narrative review was based on studies
identified in the PubMed database and published between 2021 and 2026. Clinical
trials, systematic reviews, reviews, and meta-analyses concerning exercise snacks
and their effects on human health were considered. Study protocols and studies
without open access to full text were excluded. Results: Exercise snacks may provide
several health benefits while requiring relatively little time. Available evidence
suggests that regular exercise snacks can improve cardiorespiratory fitness,
including maximal and peak oxygen uptake, and may positively affect body
composition. Reductions in body fat, waist circumference, body mass index, and
visceral and epicardial adipose tissue have been reported. Exercise snacks may also
improve blood pressure and glucose metabolism. Acute studies suggest that short
interruptions of prolonged sitting can reduce postprandial glucose and insulin
responses. Some evidence also indicates favorable changes in selected lipid
parameters. Conclusions: Exercise snacks appear to be a time-efficient form of
physical activity that may help people who have difficulty incorporating longer
exercise sessions into their daily routine. However, the available evidence is still
developing, and further studies are needed to determine their long-term health
effects and optimal frequency and intensity.
Keywords: exercise snacks, physical activity, sedentary behavior, cardiometabolic
health
