Forget crunches: The smarter way to strengthen your core
Your core is an interconnected group of muscles, not just your abs, that’s important to strengthen to support your body during exercise as well as everyday tasks.
I did 70 cycling Russian twists every day for a week — here's what happened to my body
The Russian twist is an effective abs-strengthening move, but I tried this variation to work my core even harder.
If You Can Do This Many Sit-Ups in 60 Seconds, You're in Great Shape
A trainer explains how many sit-ups you should be able to do in 60 seconds to signal peak fitness and how to boost your sit-up endurance.
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Forget planks—build a stronger core in just five minutes with this trainer's standing abs workout
There’s a whole world of moves beyond these classics to help strengthen your core—like those featured in this standing abs ...
Jane Fonda Stays Fit at 87 Thanks to a Low-Key & Surprisingly Accessible Workout Routine
At 87, Jane Fonda is the first to acknowledge that her fitness habits look different than they did when she was taking over ...