Week 1: Getting Started Perform 3 sets of Standard Sit-ups, gradually increasing reps each day.

Day 1: 3 sets of 10 reps

Day 2: 3 sets of 12 reps

Day 3: 3 sets of 15 reps

Day 4: Rest Day

Day 5: 3 sets of 18 reps

Day 6: 3 sets of 20 reps

Day 7: 3 sets of 22 reps

Week 2: Intensifying the Challenge Increase both sets and reps for Standard Sit-ups.

Day 8: 4 sets of 25 reps

Day 9: 4 sets of 28 reps

Day 10: 4 sets of 30 reps

Day 11: Rest Day

Day 12: 4 sets of 32 reps

Day 13: 4 sets of 35 reps

Day 14: 4 sets of 38 reps

Week 3: Pushing Your Limits Incorporate advanced variations of Standard Sit-ups for an added challenge.

Day 15: 5 sets of 15 reps

Day 16: 5 sets of 18 reps

Day 17: 5 sets of 20 reps

Day 18: Rest Day

Day 19: 5 sets of 22 reps

Day 20: 5 sets of 25 reps

Day 21: 5 sets of 28 reps

Week 4: Final Challenge Maximize intensity and test your core strength with Standard Sit-ups.

Day 22: 6 sets of 30 reps

Day 23: 6 sets of 32 reps

Day 24: 6 sets of 35 reps

Day 25: Rest Day

Day 26: 6 sets of 38 reps

Day 27: 6 sets of 40 reps

Day 28: Final Day: 6 sets of 45 reps

Congratulations on completing the one-month sit-up challenge! This routine is designed to progressively build your core strength over the course of the month. Remember to listen to your body, stay hydrated, and maintain proper form throughout the challenge. If you’re new to exercise or have any underlying health conditions, consider consulting a fitness professional before starting such an intense routine.