12 Metabolism-Boosting Foods to Aid Weight Loss Fish & Shellfish. Metabolism-Boosting Powers: Fish (salmon, tuna, sardines and mackerel) are rich in omega-3 fatty acids and protein. ... Legumes (Also known as beans) ... Chili Peppers. ... Lean Meats. ... Low-Fat Milk. ... Broccoli. ... Lentils. ... Oatmeal. More items...