Additional methodological details and results.

<p>The supporting information document contains (i) self-reported fitness level scores measured using the framework of the International Fitness Scale (IFIS), (ii) pre- and post-study alertness scores measured through the Stamford Sleepiness Scale (Hoddes et al., 1973), (iii) pre- and post-study mood scores measured through the Feeling Scale (Hardy et al., 1999) before and after the 30-minute physical activity condition, and (iv) pre- and post-study arousal scores measured using the Felt Arousal Scale (Svebak & Murgatroyd, 1985).</p> <p>(DOCX)</p>