The true test of a climber is how they take their skills on the road. Exploring the rocky beaches of a foreign country without any gear but a bathing suit is very different from training in the gym, but exactly why it's important to train.
All boulders in this video were either first ascents, or some fool following in the bare footsteps of another. The rock on the beaches of Costa Rica isn't always the most reliable, but beach bouldering is just too radical to turn down. Fun climbing is everywhere!