The stability ball tuck crunch is a great beginner level ab exercise that is suitable for all fitness levels.
The stability ball ab crunch is a beginner core exercise. This exercise targets the abs and is suitable for any fitness level.
Deadbugs with the stability ball is a core exercise that works the upper and lower abs at the same time. This exercise uses the stability ball to ensure correct form throughout.
The reverse crunch-crunch with the exercise ball is an intermediate core exercise that trains both the upper and lower abs. This exercise requires a great of core strength in order to be done properly.
The stability ball crunch is a core conditioning exercise that strengthens the abdominal muscles.
The plank is a core strengthening exercise that also targets the butt and shoulders.