Fire hydrants target your gluteus medius (think the side of your butt). "This muscle can be overshadowed in training, since many people focus on their gluteus maximus, the main part of your butt," says Domenic Angelino, a certified personal trainer. "The gluteus maximus still will experience a training effect here, but it won't be as profound as the gluteus medius." So, no — the fire hydrant is not a replacement for squats. But it can be a great alternative, since it works related but different muscles.

They Don't Require Equipment

The fire hydrant is a great way to train your glutes without needing access to go to a gym. Lack of equipment can be a barrier when it comes to working out, but with the fire hydrant, all you need is your bodyweight. "This is huge, because a lot of people struggle to maintain motivation to work out consistently. Since motivation comes in waves and is transient, it's important to have tools at your disposal to capitalize on those bursts of motivation. Having a way to work out on the spot is a great way to do this," Angelino says. This also means you can keep up with your fitness routine anywhere.