What are the different types of sit-ups and how do they vary in terms of targeting different muscle groups?

Answer 1

There are various types of sit-ups, including traditional sit-ups, crunches, reverse crunches, and bicycle crunches. Each type targets different muscle groups to varying degrees. Traditional sit-ups primarily work the rectus abdominis, while crunches focus more on the upper abs. Reverse crunches target the lower abs, and bicycle crunches engage both the upper and lower abs along with the obliques.