The two straps dangling from a metal frame may look harmless, but if used properly, they can provide an incredibly intense workout. These straps, typically black-and-yellow, are used for TRX training.

People slip themselves into the straps and then rely on their own body weight to do exercises such as squats, push-ups or upright rows. “It’s a movement in 3D space,” explains personal trainer Marcel Doll.

In other words, during a TRX workout, you may have to rotate your body, go to a horizontal position, or stand and face the slings, whereas traditional strength training with equipment allows your body to move in only one direction.

Another important feature of TRX is that it features stability training. Making your body unstable forces you to rely on your core. However, that lack of stability is a common source of error for TRX beginners.

“The body has to form a straight line and not sag,” says Doll. Training regularly, between two to three times a week, is the best way to see results.

Relying on one’s own body weight for the exercises also provides an “a-ha effect”, says Sascha Linz, a TRX trainer. “It helps people understand how exhausting it is for the body just to carry their weight.”

For people on the go, the exercise is an attractive alternative to the gym because it can be done anywhere. All a person needs is a solid hook or wooden beam that’s able to hold the straps and one’s weight. The rest hinges on motivation. – dpa