The forearm plank is an example of an isometric core exercise that works to develop your whole core, particularly your abdominal muscles, back, and hips.
Bicycle crunches work abs, obliques, and hip flexors. They work more muscles than traditional crunches and may be easier on your back.
Russian twists strengthen rotational core and obliques. They improve core strength and athletic performance.
Side planks work shoulders, hips, and obliques. Side planks engage your core differently than back exercises since they need hip stabilization against a lateral force.
Isolating lower and upper limb motions in the dead bug exercise improves core stability and coordination. This helps your lower back. It's a good post-workout recuperation choice.
Abs aren't your core. You should also train your glutes and lower back. The Superman exercise, which uses your body weight, targets your lower back and glutes.
Hollow body rock is the final core-building exercise. This swaying motion works your abdominal and lower back.