 Participants will then be provided with one of the two breakfast meals that are being tested in a randomised order. The two breakfasts consist of a high fat breakfast or high fat plus additional whey protein. A drink of water shall also be consumed, the volume of which depends on the trial being carried out. The high fat breakfast will consist of scrambled egg yolks made with single cream and butter Tesco, Hertfordshire, UK. The macronutrient distribution of the breakfast is 12 protein, 3 carbohydrate, 85 fat 1771 kJ; 423 kcal total. For the whey protein trial, 23.9g whey protein isolate Lacprodan DI-9224, Arla Foods, Denmark shall be added to water and incorporated into each meal as a drink on the side, in order to provide 20g whey protein. 