Energy Intake, Exercise and Constitutional Leanness

condition without exercise / rest condition. The participants will be asked to remain quiet and at rest during the morning and will receive a fixed meal at lunch. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.

condition without exercise / rest condition. The participants will be asked to remain quiet and at rest during the morning and will receive an ad libitum meal at lunch. Their food reward will be assessed before and after lunch. Their appetite feelings will be assessed at regular intervals.

condition with an acute exercise set 30 minutes before the lunch meal that will be served ad libitum This will be a 30-minute exercise set at 65% of their capacities (cycling), 30 minutes before lunch.