Bands act here as a form of accommodating resistance. As you bring the weight up, the resistance increases. And as you lower the dumbbells, you have to fight against the regular weight, but also the band resistance trying to pull you down.
Wrap a band around your back.
Lie down on a flat bench holding dumbbells or kettlebells at your shoulders, palms facing inwards. Bring the dumbbells up until your arms are almost fully extended.
Slightly bend your arms and arc the weights down to your sides until you feel a stretch across your chest.
Squeeze your pecs to return the weights to the start position.
When anyone talks about training for any goal, they need to consider force, speed, and muscle fiber recruitment. They're the gears that are driving the bus, and Chad Waterbury is at the wheel. Remember, though, that the driver carries no change.
Admit it. A lot of times you plan your workouts around your major muscle groups and just "throw in" a few sets at the end for your ancillary muscles – calves, abs, and forearms.