The purpose of this Pilot study was to identify the point at which appetite regulation is subjectively suppressed. Previous research has shown that exercising at a low intensity (~50% VO2Max) can lead to increased feelings of hunger during exercise, while exercising above ~65% VO2Max results in suppressed hunger, particularly during the recovery period. These findings are further supported by changes in gastrointestinal markers. The key focus is on identifying the threshold where appetite suppression occurs, especially in relation to exercise intensity and its impact on feelings of hunger and gastrointestinal markers. Therefore, measurements for appetite, HR, substrate utilisation, metabolic markers, gut-derived hormones, menstrual cycle and subjective feelings of wellbeing were assessed. Fundamentally, finding time-efficient exercise strategies to improve weight management and increase physical inactivity is critical. A growing amount of literature is committed to understanding the role of appetite and satiety (a feeling or condition of being full after eating food). The reason for conducting this research is to help understand whether exercise is more effective for health if performed in the “Suppression zone” and if this is effected my the female menstrual cycle |