Youve probably heard it in yoga, Pilates, and strength-training classes alike.

But for how often it gets called out mid-workout, its rarely explained step-by-step.

Dont just grip all your muscles

First, resist the urge to tense your entire body.

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If you do it correctly, says De Winter, no one else should actually see anything happen.

Really, your pelvic floor and your glute muscles are two very different things, she says.

you might work those glutes later, okay?

Two young women practicing ballet with a teacher in the dance hall.

physiotherapist, master Pilates instructor, and founder ofGo Chlo Pilates

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Woman doing hip exercises

Cropped image of woman doing lunge yoga pose

Woman in leggings and bra doing Lunge with Arm Extended Up pose hip opener stretch during yoga session in morning at home.

Woman doing arm exercise without weights while sitting on mat at home.

A woman in sports clothes does yoga or gymnastics at home. Daylight. She smiles