How do you train sit-ups correctly?
I've heard you can damage your back if you don't do it right.
Also, are there any varieties that allows one to use weights or similar objects? I ask about this because I want to build bigger muscles rather than focusing on endurance.
I get it you need to do few repetitions.
Sport fitness advisor is a good site for abs/core exercises. Here are some examples from their site:
Check out their site for more exercises!
My personal recommendation: get a swiss/exercise ball, start off with no weights and focus on the tension in the core. I'm assuming when you say bigger muscles, you mean a six pack - Six packs are hard to come by and are seen on people who have very little body fat, the abs are interlaced muscles that are one small part of the core.
Your question about hurting yourself - Yes, just like any other exercise, you can hurt yourself if not done properly. Technique first, then add intensity. A good, consistent, complete body routine is what the focus should be on.
Keep your eyes on the ceiling and concentrate on bringing your shoulders up to the sky, not your knees. That's one tip that really helps execute proper sit ups.
But if bigger muscles are you goal, sit ups a poor choice. I'd suggest trying planks or ab roll outs for better results with less risk of injury.
And as always, any discussion of abs needs to include the adage "Abs are made in the kitchen." If you want killer abs, you have to cut body fat, and that's primarily done with diet/nutrition.
Tough question because it wide open. I use different setups for different muscle groups. Each setup has it's own set of standards according to what you're trying to work.
On the flip side of that, I did run into some generic things not to do.
When you're attempting to slim, don't use an incline board. do them on the flat.
