3:05 in this video
Adding the instability of the TRX handles to the equation takes the classic push-up to the next level.
Start with arms extended and hands on the TRX handles at shoulder width and feet on the ground in a push-up position.
The difficulty of this exercise will be determined by how high or low the TRX straps are set: the more closer to parallel you are to the ground, the more difficult the exercise will be.
Once in position, lower your chest down under control until you reach a position with your hands just outside of your chest.
Just like our bench press exercises, we want to keep arms at a 45-degree angle to make sure our shoulders are safe.
One tip with the TRX handles is to raise the arms a little bit forward so the straps don't scrape up your arms as you lower down.
In the bottom position, press explosively to bring your body back to the top position.
Keeping the core tight throughout this whole movement is imperative to maintaining good position and keeping your body stable.
If you're not used to training with TRX, I recommend starting at a little bit higher height and gradually lowering down as you become more comfortable.