In exp 4, 6-week-old C57BL6J mice were intraperitoneally injected with saline or the high-affinity 5-HT2A agonist, 4-Bromo-3,6-dimethoxybenzocyclobuten-1-yl methylamine hydrobromide (TCB-2) (2.5 mg/kg) in the light cycle. 14 h later and 24 h later, mice were intraperitoneally injected with saline or liraglutide (100 μg/kg) in the light cycle, respectively. Chow pellets were provided 30 min later. The intake of chow pellets was measured for the next 1 h and then 2 h.