The Difference Between the Crunch and the Sit-up. The crunch exercises only the abdominal muscles, while the full sit-up involves both the abdominals and other stabilizing muscles – in the chest, neck and low-back as well as hip flexors and lower-leg muscles (if you hook your feet).
Accordingly, can you get a six pack just by doing sit ups?
Sit-Ups Won't Give You A Flat Stomach — But Here's What Will. I am often asked if doing situps or crunches will get people the toned six-pack abs they're looking for. Unfortunately, even if you do 100 crunches a day, you won't lose the fat from your belly.
Are planks more effective than crunches?
Whilst the plank and crunch both work the abs, each one does so uniquely. Primary muscles used in the crunch include rectus abdominis, the six pack muscles, and oblique's, similar muscles used in planks. However planks also activate muscles in the shoulders, glutes and legs too.
Do sit ups help you lose belly fat?
While sit ups might not be the best option for losing fat overall, they do offer a lot of other benefits. They strengthen the core and help build abdominal muscles. Having more muscles will, in turn, increase the amount of calories that your body burns, which will help you burn fat.