Are planks the best way to build core strength? I put this eight-minute workout to the test to find out

Fitness writer Alice Porter doing a plank variation.

You've probably come across the plank exercise before. It's a popular movement that is particularly useful for strengthening the core, a group of mid-body muscles that play a role in balance, stability and spinal support.

There are many variations of the movement, including side planks, reverse planks, and fast-paced plank jacks. I usually stick with a classic plank, so I was intrigued by this plank-based routine from trainer Sophie Alecce that features eight different variations.