Diastasis recti or a hernia could cause a bulge in the middle of your stomach during sit-ups. Talk with your doctor for a treatment plan for these conditions.
Diastasis Recti Can Hurt Anyone: What Effective Personal Trainers Need To Know
5 Effective Diastasis Recti Exercises
Diastasis Recti Pregnancy: Symptoms, Treatment, Exercises
How To Do A Sit-Up Properly At The Gym Howcast, 60% OFF
Muscle Repair in Tummy Tuck Changes Recovery: Here's How
Are You Confused About Diastasis & Hernias? You Are Not Alone. - G & L Surgical
Diastasis Recti (Abdominal Separation): Symptoms & Treatment
Preventing Rectus Diastasis - Body Harmony Physical Therapy
Signs You May Have Abdominal Muscle Separation
Treating Diastasis Recti With Physical Therapy
Diastasis Recti: Treatment and Prevention