For many of us, sit-ups are not something we consider in our daily routine; however health experts say they are very useful. A regular weight training and exercise routine doesn’t have to involve going to the gym or owning equipment. You can build muscle and get your heart pumping anywhere using your own body weight. Sit-ups help tone and develop lean and strong muscles. Sit-ups work your core and lower back muscles. With regular practice, this exercise will help you maintain overall stamina, balance and health. Health benefits If one follows a regular routine of sit-ups, it will assist in sustaining overall health. For instance, toned abdominal muscles help with digestion and posture, which keeps oxygen and blood flowing better throughout the body.Weak core muscles also make you vulnerable to muscle injury and lower back pain. A fragile upper body also leads to an increased susceptibility to injury and illness. Because muscle mass tends to diminish as people age, body fat also will increase without regular overall strength building.A regular routine of sit-ups can create a shapely and finely sculpted physique, flatten the abdominal area and give you the much-desired six-pack look.Abdominal muscles Sit-ups help define abdominal muscles. While aerobic exercise burns tummy fat, sit-ups assist in strengthening and toning underlying core muscles, according to experts. Core muscles are engaged while helping to support and stabilize the body.Following a regular routine of sit-ups will keep you toned and strengthened. A strong core will help you carry out other activities with more ease, such as lifting a box, playing tennis, playing with your kids, walking, running, or dancing.