Struggling to perform even one sit-up can be discouraging and make you feel weak or out of shape. But contrary to popular belief, inability to complete sit-ups often has little to do with overall fitness or abdominal strength. There are many reasons even active, healthy people fail at sit-ups, from poor form and technique to core instability and mobility restrictions. The complexity of the...
English
French
Spanish
Portuguese
Deutsch
Turkish
Dutch
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek
