A protein breakfast cuts lunch by 22% (Vander Wal et al., J Am Coll Nutr 2005). Per 100 g: 56 kcal, 5.7 g protein, under 1 g fat. Nonfat yogurt delivers protein with minimal calorie cost.
How should I track Yogurt, plain, nonfat?
Yogurt, plain, nonfat is a good source of calcium. The best way to track Yogurt, plain, nonfat is by weight, not volume. A 200 g serving of yogurt or cheese varies in density between brands and fat levels, so the same portion can differ by 20–40 calories. Research shows people underestimate calorie-dense dairy portions by up to 50% when eyeballing (Almiron-Roig et al., Appetite 2013). A kitchen scale keeps things honest. Also check whether the label lists values for the product as sold or as prepared — some powdered or concentrated dairy products show very different numbers once mixed.
