There are plenty of reasons to want a strong set of abs. They're tough as hell to work on, so they can provide a fitness challenge. Or maybe you just want the perfect poolside pic for Instagram. But whatever your motivations, there are some things about having a six-pack that you can only know when you're on the other end of the process. In a thread on Reddit , guys with visible, chiseled abs are sharing the things they learned that surprised them after they achieved their rock-hard stomach goals.