Morgenmadsklubben (the breakfast club)

INTERVENTION: Participants were randomised into either control or intervention at the school level. The intervention lasted for approximately four months (2012). The intervention consisted of free breakfast: wholegrain cereals with milk and sugar. One school served wholegrain bread with toppings on Fridays. The breakfast session occurred during first lesson every school day for approximately four months. The breakfast was served as a buffet and eating was voluntary. Control schools proceeded as normal but constraining from serving free breakfast to their students or having other ongoing similar health promotion projects. CONDITION: Healthy young people in vocational schools ; Nutritional, Metabolic, Endocrine PRIMARY OUTCOME: ; 1. Eating habits measured by consumption of selected breakfast items. The items included wholegrain products and other items that were considered normal breakfast in the particular population group. Both frequency and quality of breakfast intake were assessed. Measurement instrument was a food frequency questionnaire. Measured at week 0, 7 and 8 weeks after baseline, and 14 to 16 weeks after baseline.; 2. Students attention and concentration measured by a concentration test called "the d2 test of attention" at week 0, 7 and 8 weeks after baseline, and 14 to 16 weeks after baseline.; 3. Barriers and facilitators were established by interviews with stakeholders i.e. students, teachers and management. Interviews with participants at the two intervention schools were conducted at the end and after the intervention period.; SECONDARY OUTCOME: The amount of students eating during the breakfast club was counted through observations performed at both intervention schools at approximately 7 and 8 weeks after baseline and the end of the intervention period approximately 14 to 16 weeks after baseline INCLUSION CRITERIA: Schools: 1. Within a restricted geographical range due to time constraints 2. Ability and willing to pay certain expenses connected to the breakfast club intervention e.g. sugar, milk, toppings and extra cleaning 3. Willingness to participate as control school depending on the randomisation 4. Prepared to serve wholegrain breakfast as an integrated part of the school day Students: 1. Both genders 2. Age = 15 (participants were all aged 16 years or older) 3. Vocational student attending their first basic part of their education, which is situated in the school setting (Danish vocational training and education is divided into two main parts, the first period takes place at the school and the second part consist of a apprenticeship often in companies) 4. Attending courses consi