http://en.wikipedia.org/wiki/Sit-up_(exercise) http://en.wikipedia.org/wiki/Sit-up_(exercise) I didn't do a study myself, I just heard it multiple times and as

http://en.wikipedia.org/wiki/Sit-up_(exercise) http://en.wikipedia.org/wiki/Sit-up_(exercise) I didn't do a study myself, I just heard it multiple times and assumed that it was true. I have also experienced lower back pain in school when we did sit ups, but of course that doesn't mean that it will do long-term damage. > Situps can be dangerous due to high compressive lumbar load[1] and may be replaced with the crunch in exercise programs[2].