Drinking a protein shake to lose weight is based upon scientific research that indicates not all calories are the same. According to Donald K. Layman of the University of Illinois, consuming the same amount of calories through protein results in less fat storage, higher energy levels and lower blood-sugar levels. Whey protein, rich in leucine, is credited with increasing metabolism, weight loss and preservation of lean tissue. Cinnamon is also an important ingredient that has been demonstrated to lower blood glucose levels in certain individuals. For these reasons, the best fat-burning protein shakes for weight loss include whey protein and cinnamon.

Things You'll Need

Select fruit for protein shake. Wash, peel and prepare fruit. Cut into small chunks and place in a sealed container. Place in freezer until frozen. Frozen fruit increases the thickness of the shake and makes a cooling, refreshing drink.

Pour milk into blender. Add whey powder, fruit and cinnamon. Place cover on blender and run on high speed to puree fruit and blend all ingredients together.

Taste the shake. Add additional fruit if desired.

Check consistency of blended shake. Add ice and blend again to increase thickness. Start with 1/4 cup ice and add additional ice as desired.