Fitness myths are so easily started. A friend of a friend told a friend who told you. Just because the daily mail printed it, does not make it true!
The sit-up – Although it may not be the most enjoyable of exercises, sit-ups hit your abs hard, helping you build a strong and toned abdomen. They involve a great range of movement and a lifting motion. This forces you to work not only you abdominal muscles, but also your connecting stabiliser muscles, such as your hip flexors leg and chest muscles.