Green tea and caffeine: these both are very easily available. Their main job is to help burn fat faster. They increase the rate at which fat is burnt in the body so that the stored fat is used up to fuel the body, instead of taking in more and more food. Proteins: it is quintessential to build up a muscle base in the body and protein being the building block of muscles aids in the process. To have a strong and firm body structure to look like a model you need to have chiseled muscles, these can be developed by the intake of proteins mostly.