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www.reference.com/article/sit-ups-work-ff79cc0150756337

Sit-ups do not contribute to the loss of belly fat and have a minimal affect on burning calories. It is not possible to target specific areas of the body for weight loss, such as performing sit-ups to achieve a flat stomach or to gain six-pack abs.

www.reference.com/article/sit-ups-c3819f9a9db0abd1

Sit-ups are the basic exercise that is used to strengthen the abdominal muscles. They involve laying flat and raising one's torso from the ground. Compared to abdominal crunches, sit-ups exercise many other core muscles.

www.reference.com/article/different-types-sit-ups-bc3a040dbb6a5f26

There are literally dozens of different core exercises that can be classified as sit-ups. These include crunches, chinnies, jack-knife, straight-leg, weighted and Swiss-ball sit-ups, plus Russian twists. According to Muscle Prodigy, Janda-style, V-type and commando sit-ups are the most effective typ

www.reference.com/article/should-sit-ups-6456f994e4527ab5

Sit-ups should be done every three to four days. As sit-ups are not the most effective way to build muscle or burn fat, they should be done as part of a more involved exercise routine.

www.reference.com/article/standing-burn-calories-sitting-3022c3786aaed668

A person burns roughly 50 percent more calories standing than sitting, reports KVAL.com. An average person burns 107 calories per hour sitting. Results vary by size and metabolism, but a 155-pound person burns about 50 calories more per hour when standing.

www.reference.com/article/babies-sit-up-9dbddc76045ab025

Babies generally sit up independently between the ages of four and nine months. Before they can sit up, babies must have some degree of coordination and muscle strength.

www.reference.com/article/proper-sit-up-b0f8c2a9a0a04b8f

To perform a proper sit-up, lie on the floor with your hands behind your head, lift your upper back off of the ground while contracting your abdominals, and slowly lie back down. You must use the correct body position; doing this exercise without using the proper technique may cause injury.

www.reference.com/article/paid-sit-houses-f408ecadb4cd250e

One way to become a paid house sitter is to sign up at house sitting websites such as TrustedHouseSitters.com, MindMyHouse.com and Housecarers.com. For a registration fee, these sites allow users to apply for house sitting jobs all over the world.

www.reference.com/article/pet-sitting-f59582c8e463a4c2

Pet sitting is a service in which someone is paid to take care of another person's pet. It often involves things like the pet sitter coming to stay at the home with the pet while the owner is on vacation.

www.reference.com/pets-animals/horses-sit-down-e412c09b02e6fc54

Most horses remain in the standing position because their weight places excess pressure on their internal organs when lying down. Adult horses only lie down for brief periods of time. Foals spend more time on the ground during naps until they get older.