Yes, they do. It's because balancing will help most amount of the core muscle fibers be constructively affected and therefore, better results.
Riding a bike, walking.
Sit ups do not burn stomach fat. Sit ups build and tone stomach muscles.
Twice a day, do sit-ups for three minutes. Overtime, you'll get better. I can do about 65 sit-ups per minute.
sit-ups raise your heart beat more
sit ups measure your stomach strength.
at the last smackdown vs raw sit up/ push up contest john cena, (raw) did 112 push ups and 116 sit ups. he came second to batista (smackdown) who did 117 push ups and 119 sit ups
Sit ups helps your abs become more tough or strong.
Dr. John Epley invented the sit-ups. I guess... This answer is from Kassi
You have to do sit ups. You can put weight on your shoulder and then do those sit ups. 4 to 8 such sit ups and 4 to 8 such sessions on alternate days.
I'd say about 40 to 50 sit ups.
In reference to physically exercising, the perfect installation exercises would be a series of push ups, sit ups, and pull ups. Each exercise will focus on a core part of your body giving you a tone even balance when working out.
First you lose weight and you start doing exercises such as running,sit-ups and crutches. You will also need a balance diet.