Take the LIVESTRONG.COM 4-Week Plank Challenge with fitness expert Elise Joan. The goal is planking twice a day, every day to build a seriously stronger core.
Every week for four weeks, we give you seven plank variations that’ll work every major muscle group, including your abs, obliques, hips, back and glutes.
If you're a beginner, start by holding each plank for 30 seconds, twice a day. By the end of the first week you’ll be able to hold for a minute, no sweat! Ultimately, you'll want to work your way up to 3 minutes per plank, especially with some of the abs-on-fire advanced moves Elise came up with!
Keep track of your progress with our special calendar: http://lvstrng.com/plankcha...