If you’re a little hazy on the difference between sit-ups vs. crunches, you’re not alone. They both strengthen your core, but the details on how they differ and the benefits of each can be confusing. ...

Master these classic core exercises (they're not the same!). Javier Zayas Photography/Getty Images If you’re a fan of core exercises, chances are both sit-ups and crunches are a staple of your workout ...

If you've ever wondered (mid-crunch, most likely) exactly how many sit ups you should be doing every day to optimise your fitness, then you're in the right place - this is exactly the type of question ...