A good way to work your ab muscles is as simple as riding a bike. Bicycling stretches and uses your stomach muscles and help them become more defined.
I'm not sure what you mean by "other kinds" but sit ups and crunches are most effective. Rowing (either in a canoe or at the gym) is also excellent for toning abs.
Some effective exercises are crunches, push-ups, pull-ups, squats, and weight lifting to name a few. Or you could do any other types of exercises that include weights like bench presses, etc..
Incorporating cable machine crunches into your workout routine can help strengthen your core muscles more effectively than traditional crunches. The cable machine provides constant resistance throughout the movement, leading to better muscle engagement and development. This exercise can also help improve your overall stability and balance, leading to better performance in other exercises and daily activities.
An exercise mat is optional for crunches and other types of exercise. Crunches should be done wearing comfortable clothes, and on a surface that is firm but comfortable- such as a carpeted floor or a hard floor with a mat.
crunches
Light food,execise like sit up and other tummy flatten execises,lot of water especially in the morning,black tea and cofee (sugar free).
Yes they are but you should warm up really well before and start doing crunches right after the other exercise; it will burn more!.
How much weight you can lose in a month by drinking water and doing crunches every night also depends upon other factors. These include you start weight, gender, age, diet, metabolism and how many crunches you do each night.
It's not that crunches don't work, it's that they won't get you a flat stomach. What you want is to do cardio. Anything that gets your body moving and your heart rate up will help you lose fat. When you do lose the fat around your stomach you will see the results of the crunches (muscle definition). It's good to do both (and not just crunches other "absentric" moves) if you want a flat stomach, but being active and eating well will lose the fat that is really the point of flat stomacs.
My soccer coach told me he does 3000 crunches a day plus all his other stuff.
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Just to get a little exercise, maybe 100 or so a day. If you want a really toned stomach and abs, then do maybe 200 crunches a day, along with some other core exercises.