The standard band external rotation exercise has a few drawbacks. It's easy to compensate by using the lumbar spine. Not good. It's also hard to tell if you're getting full range of motion.
These problems can be solved by doing this supine variation. It's impossible to compensate with the lower back and you'll know when you're reaching full ROM when your wrist bones touch the floor.
By definition, a peak is surrounded by two valleys, which means (despite what athletes always like to tell me), you can't be in peak condition all the time.
As a member of an elite Navy Special Warfare Combatant-Craft Crewman team that often finds itself in the Third World, Craig Weller has learned to improvise when it comes to his workouts.