The starburst side plank variation strengthens the shoulders, abs and obliques. Here's why we love it at Tom's Guide.

Finding an exercise that gets you more bang for your buck is like hitting a jackpot, and if it's bodyweight—AKA requiring no equipment other than your body—you're onto a winner. One exercise we love ...

I don’t love planks. There I said it. Isometric exercises (or holding one position) are not my thing. I prefer other types of core exercises (hi dead bugs, bicycle crunches, inchworms, or V-ups!) over ...