What’s core stability? Core stability can be defined as the ability to maintain or return to equilibrium in the presence of a perturbation. Given this definition, many yoga poses we traditionally think of as challenging our stability don't quite fit the bill. For example, consider plank and side plank. These poses *do* challenge our core, but more from a *core strength* or a *core strength endurance* standpoint – not so much core stability. This is because there isn’t much going on in the way of