Fig. 2
Overview of the study schedule. Participants undergo a 30 h protocol, starting at 8:30 am in the morning of day 1 until approximately 1:00 pm of day 2. Study components flow as per Fig. 3. Individuals wear an accelerometer for 29 h of the study. The fasting period commences at 18:30 following dinner on day 1 and continues until 12:30 on day 2. Neurocognitive testing, neuroimaging, biological sampling, and microdialysis are conducted before (T1) and after (T2) the experimental fast