Edinburgh RM, et al. - Researchers examined 24-hour energy balance following omission of vs consumption of breakfast prior to exercise. Three trials were completed by 12 healthy physically active young men (age 23 ± 3 years; body mass index 23.6 ± 2.0 kg/m²) in a randomized order (separated by more than 1 week): a breakfast of oats and milk (431 kcal; 65 g carbohydrate, 11 g fat, and 19 g protein) followed by rest (BR); breakfast before exercise (BE; 60 minutes of cycling at 50 % peak power output); and overnight fasting before exercise (FE). For the FE trial, the 24-hour energy balance was −400 kcal (normalized 95% CI: −230 to −571 kcal), which was significantly lower compared with both the BR trial (492 kcal; normalized 95% CI: 332 to 652 kcal) and the BE trial (7 kcal; normalized 95% CI: −153 to 177 kcal; both P < 0.01 compared with FE). Complete compensation for post-exercise was noted with neither exercise energy expenditure nor restricted energy intake via breakfast omission. In healthy men, a more negative daily energy balance was created with pre-exercise breakfast omission and thus seems to be a useful strategy to induce a short-term energy deficit.