Which exercise is best for improving core stability?

The plank exercise is widely recognized as one of the best options for improving core stability. This is primarily because it engages multiple muscle groups simultaneously, including the rectus abdominis, obliques, transverse abdominis, and lower back muscles. By maintaining a plank position, individuals train their core muscles to hold stable, which enhances their ability to support the spine and pelvis during dynamic movements.

In contrast, while crunches primarily target the rectus abdominis, they do not engage the full core musculature or promote stability as effectively as planks. Meanwhile, deadlifts and squats are excellent for overall strength and physical stability; however, they focus more on developing lower body strength rather than specifically isolating or training the core for stability in a sustained position. Thus, the plank stands out as the optimal choice for core stability enhancement.