Stand with feet shoulder-width apart and hold a resistance band anchored at chest height or under your feet. With a slight bend in the elbows and a neutral spine, pull the band outward and backward in a “fly” motion until your arms are out to your sides. Focus on squeezing your shoulder blades together and controlling the band as you return to the start.
Log your resistance band rear fly sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.