One of my favorite, and most useful, tools in the gym is a TRX Suspension Trainer. I not only use TRX in my own training but in nearly all of my athletes’ training at some point in time.

One of the major benefits of TRX is the ability to improve your core strength with nearly every exercise you perform. Due to the anchoring and design of the suspension system, there is almost always a level of functional instability no matter what you’re doing. I think of it as just enough instability to have a purposeful training effect without going overboard on excess props and circus tricks.

Having a high functioning core is vital to your progress in the gym or your sport. If you’ve been on the internet for more than five minutes, I’m sure you’ve come across at least one “core” article that told you that. I’ll go ahead and drive the point home even more with a few ideas you may have not tried.

Here’s a look at four ways you can progress common TRX exercises to blast your midsection by simply removing one hand or foot from the movement.