Fig. 4: Fat oxidation at 27 °C (27) and 19 °C (19) in the morning (0800h–1100 h) and in the evening (1900h–2200 h).
From: Diurnal variations of brown fat thermogenesis and fat oxidation in humans

A Total fat oxidation. B Cold-induced fat oxidation. Black columns, High-BAT group; white columns, Low-BAT group. Values are mean ± SD. **P < 0.01 between the groups.