A black leather jacket and a killer attitude a Black Canary doth make. Despite the ability to make crystal break with a cry that's practically beyond this world, what really makes the person "super" is the willingness to make a stand and kick butt.
Reavers are strong, committed, out to win. Taking them down requires not greater force but greater dexterity. Speed, agility, endurance and precision require muscular control and the River workout takes your muscles through a range of motion that's.