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crunches are a better ab workout than sit ups. Sit-ups use the hip flexor muscles to complete the exercise more than the abs and even more so if the feet are anchored.

Sit ups as i imagine them are more a hip flexor exercise. Crunches will target the actual abs, as you feel it with the burn. For exercising the mid region of the abs, yeah. But remember there's a lot of other muscles in your body ! A super huge six pack with skinny arms and legs doesn't do you much good, and is kind of funny !

Sit ups have been proven to hurt your neck, same with crunches. Do plank pose it tightens the abs without any side effects to the neck. Do a reverse crunch feet up in the air, lift the butt up and feet toward you. These 2 exercises work in harmony and no chance of hurting your neck. Hope this helps

to the 1st poster - crunches dont injure ur neck if u use PROPER FORM, situps are crap tbh IMO

do Decline crunches - REMEMBER to go very slowly... more volume doesnt always mean better results...

if u want deep valleys in ur abs do WEIGHTED crunches 10-12 repetitions no more

if u do weighted exercises for abs DONT train them more than twice a week - treat em like any other muscle

i,m 62 and do both . i was told young sit ups work above the belt ,crunches below the belt . i think trainers would agree as a rule of thumb as they say .

none.

With the intention to get 6 set of abs you should do 2 crucial actions.

The first one is to lose body fats and the second one is to do the right exercises.

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only think of yourself with this impressive abs that you crave so much... (i have it already :)

Do a little of both, but I think crunches are better.