Crunches are out—deep core is in! Pilates pro Michelle D’Onofrio swears by these three moves for a strong, stable core: The Hundred (100 arm pumps), Plank (30-60 seconds), and Teaser (5 reps). Do one round for a quick burn or repeat for a real challenge. These target way more than just your abs—think better posture, balance, and strength. Who knew 15 minutes could do so much? #Fitness #Pilates #CoreWorkout