By A Mystery Man Writer
When your intestines feel like they are twisting, it can be frightening. Thankfully, it isn't caused by exercises such as sit-ups. It's more likely a hernia.
Abdominal Muscle Strain - Stomach pain & cramps
Signs of a Hernia After a Gastric Bypass
Why does my stomach ball and cause me great pain up when I do sit ups? - Quora
Exercising with Diastasis Recti - Which Ab Exercises Are Safe?
Sport och fitness - Sida 97 Sport, fitness, hälsa och kost!
Why You Should Do Crunches And Sit Ups - 20 Ab Exercises
Stop doing sit ups with twisting! – Micro Training
Crunches Vs. Sit-Ups—Which Exercise Is Better?
Russian Twist Exercise: How to Do the Abs Move Safely to Really Fire Up Your Core
Abdominal Exercises: Why does the area around my bladder hurt when working out? - Quora
The Abs Exercises You Should Skip If You Have Lower Back Pain
10 Sit-Up Variations (From Easiest to Hardest) - Steel Supplements