Defined, toned abs — commonly called a six-pack — are an often sought-after goal in the gym. But not all toned abs look the same. Some people sport a four-pack, while others may have an eight-pack.

Let’s cut through the noise. Everyone wants to know how to get abs fast, but the truth is that most people are looking for shortcuts that don’t exist. Whether you’re doing 100 sit-ups a day or ...