"Sitting Ab Exercise: 50 Reps a Day for a Week Challenge"

Seated lean-backs are a beneficial ab exercise that can be done sitting down, engaging the core muscles without the need to lie on the floor. By adding 50 reps of seated lean-backs to her daily routine for a week, the author found that her core had to work hard, emphasizing the importance of maintaining good form and moving slowly. While not resulting in visible changes in her core after one week, the exercise provided a significant midsection workout, making it a great addition to a fitness routine, especially for those who may struggle with traditional ab exercises.