Diving into the water without an oxygen tank is called ‘free-diving.’ It is a form of apnea diving in which divers must hold their breath for an extended period while diving deep into the water with just one breath of oxygen. The difficulty in holding the diver’s breath during this time is not due to a lack of oxygen but rather an increase in carbon dioxide concentration. In other words, if you keep your heart rate low and your metabolism slow, you produce less carbon dioxide, which allows you to dive for a longer duration. The only way to maintain a low heart rate is to remain as calm as possible. Maintaining calmness has numerous benefits in life. - Joseph’s “just my thoughts”
If a New Zealand fisherman catches a seabream in New Zealand, he makes a profit of $9 per kilogram, but if a tourist catches it, $88 goes back to New Zealand. This is because to fish a seabream, the tourist has to spend money on flights, hotels, and all sorts of rentals. The opportunity cost and value-added will change as B2B becomes B2C. - Joseph's "just my thoughts"