Planks vs Push-Ups - Which Workout is BETTER? (Comparison)
How to Plank Like You Mean It
UNSTUCK
I Took Plank Breaks At Work For Two Weeks— Here's What Happened
Do A Better Plank, Not A Longer Plank! - Meghan Callaway
Issuance of Insanity 2, PDF, Sports
BwD Leisure - The plank is an effective exercise for developing your core strength around the spine, but bad form can hurt your shoulders and back. The common mistake here is sagging
How to do a plank correctly: 3 mistakes most people make
You might not see the difference between this and a regular plank, but you'll feel it!
The Planks You Should Be Doing (But Probably Aren't)