The TRX Plank is the cornerstone position for any exercise on the TRX, and should be the core of any core training program. It is the single most important exercise to master because it applies to almost every physical thing you do.
Start with your knees, palms and forearms on the ground and your feet directly under the anchor point. Drive up into a plank with a solid core contraction. Your contraction should drive this movement. You’ll know that you are in the correct position when your ears, shoulders, hips, knees and ankles are all in line. This is the position you need to hold for the entire duration of this exercise.
Take mental note of the way this position feels, how engaged your core, glutes and back are, and remember it. There will be a test later. This position plays a critical role in almost every movement on the TRX as well as in just about every kind of strength training you will perform. Think about your position at the top of a dead lift, squat or hard-style kettlebell swing, if you have done it right, you will feel the same type of core engagement as you do when you execute a TRX Plank.