Fig. 1. Representative trace of (A) the rate of oxygen consumption (_O2), (B) heart rate (fH) and (C) body temperature (T_b) measured from a single individual while fasting (black symbols and lines) and while postprandial (grey symbols and lines). Each trace includes the entire period for which the animal was instrumented, and traces for each digestive state have been aligned to coincide with the period when the lizard moved under the heat lamp. Lizard was fed at 0 h. In C, # and + indicate the times at which the heat lamp was switched on and off, respectively. During the postprandial state, the animal remained at an ambient temperature of 30°C until approximately 23 h, after which room temperature was decreased to 14°C (indicated by hatched vertical line).