Study procedure
The study was performed in a single-blinded, placebo-controlled, randomized crossover design. Each volunteer participated on two testing days lasting a maximum of 2 h each. Both testing days were separated by a minimum of 1 week to allow for a sufficient washout periodThe evening before each testing day, participants first received either an agonistic GLP-1 analogue (see below) or an equal volume of saline solution, followed by a standardized dinner with equal caloric amounts per individual (Supplementary Table 