Cumulative caloric intake as a function of experimental condition and time of day within
three circadian preferences. Although circadian preference was modeled as a continuous
variable in analyses, for illustration purposes this figure presents findings discretely
for morning larks (left panel), intermediate circadian preference (middle panel), and
night owls (right panel). These values correspond to the following fall-asleep and rise
time times at baseline: morning larks, 11:12 pm/6:48 am; average midsleep group, 12:06
am/7:06 am; night owls, 1:03 am/7:27 am.