<human>:  What kind of exercise should I do to strengthen my core?
<bot>: The best exercises to strengthen your core are planks, crunches, and reverse crunches. These exercises target your abdominal muscles and help build a strong, stable core. Alternatives to these classic exercises include plank variations, Russian twists, and side planks. For an extra challenge, you can also add exercises such as mountain climbers and burpees. Whichever exercises you choose, make sure to maintain proper form and keep challenging yourself for the best results.