I'm not a huge fan of crunches. The move is easy to perform incorrectly and doing so puts a lot of strain on the neck. Another reason I don't love them is that if you're short on time, they aren't the ...

For core workouts from Stephanie Mansour — plus fitness challenges, walking podcasts, meal plans and inspiration — download the Start TODAY app! When it comes to toning the abdominals, many of my ...