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”
Originally, the Louis Vuitton suitcase had no wheels. The ancient journey was the exclusive possession of the nobility and the rich. It was hard to go alone because there was a lot of luggage to travel with, so it was usually possible for people who could handle servants. Therefore, there was no need for wheels in the bag then. Popularized travel is a product of the late 20th century. When we look at the wheel of a suitcase, we have to be able to look at history and class together. And we should be able to see the essence of luxury goods. - Joseph’s “just my thoughts”