Anchor a resistance band at low height or step on it with one foot. Stand tall with feet hip-width apart and hold the band in one hand. Start with your arm extended forward and slight tension in the band. Pull the band toward your torso by bending your elbow and squeezing your back. Keep your elbow close to your body and avoid rotating your torso. Slowly extend your arm back to the start under control.
Log your band one arm standing low row sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.