Verb
increase the number of rotations per minute
speed up
Source: WordNetWhat you want is to rev up your metabolism so that you are burning fat and calories, not preserving fat and calories. Kathy Freston
All those spices and herbs in your spice rack can do more than provide calorie-free, natural flavorings to enhance and make food delicious. They're also an incredible source of antioxidants and help rev up your metabolism and improve your health at the same time. Suzanne Somers
rev up an engine Source: Internet
let's rev up production Source: Internet