It is not recommended to wear contact lenses while freediving. The pressure changes that occur when diving deep underwater can cause discomfort and potential damage to the eyes if wearing contact lenses. Additionally, there is a risk of losing the lenses in the water, which can be dangerous for both the wearer and the marine environment. It is best to consult with an eye care professional for advice on the safest options for vision correction while freediving. **

Packing air while freediving can be both dangerous and beneficial, depending on how it is done. When done incorrectly or excessively, packing air can lead to overexpansion of the lungs, which can cause lung barotrauma or arterial gas embolism, both of which are serious and potentially life-threatening conditions. However, when done properly and in moderation, packing air can increase lung volume and improve breath-holding capacity, allowing freedivers to stay underwater for longer periods of time. It is important for freedivers to receive proper training and guidance on how to safely and effectively pack air to minimize the risks associated with this technique. **

A neck weight in freediving or apnea diving typically weighs between 1-3 kilograms (2.2-6.6 pounds). The purpose of the neck weight is to help the diver achieve neutral buoyancy in the water, allowing them to descend and ascend more easily without expending excess energy. The weight is positioned around the neck to help the diver maintain a streamlined body position and reduce the effort required to equalize the ears. The specific weight used can vary depending on the individual diver's body composition and diving conditions. **

Network marketing is a business model where individuals sell products or services directly to consumers through a network of distributors. These distributors earn commissions not only on their own sales, but also on the sales made by the distributors they have recruited into the network. This creates a multi-level structure where distributors can build a team and earn passive income from the sales generated by their downline. Network marketing often involves selling products through word-of-mouth marketing and building relationships with customers and team members. **

Network marketing can be both good and bad, depending on various factors. It can be a good opportunity for individuals to start their own business with low initial investment and flexible working hours. However, it can also be seen as bad if the business model relies heavily on recruiting new members rather than selling actual products, leading to a focus on recruitment rather than product quality. It is important for individuals to thoroughly research and understand the company and its products before getting involved in network marketing. **

Many individuals have experience in network marketing, including sales professionals, entrepreneurs, and individuals who have worked in direct sales or multi-level marketing companies. These individuals have gained experience in building and managing a network of customers and distributors, as well as promoting and selling products or services through word-of-mouth and relationship marketing. Additionally, those who have received training or certification in network marketing may also have relevant experience in the field. **

Network marketing can be a good idea for some individuals who are motivated, have strong networking skills, and are willing to put in the time and effort required to build a successful business. It offers the potential for flexible work hours, unlimited earning potential, and the opportunity to work from home. However, it is important to thoroughly research the company and products being promoted, as well as understand the compensation plan and potential risks involved before getting involved in network marketing. **

Network marketing can be a safe and legitimate business opportunity when done with reputable companies that offer quality products or services. However, it is important to thoroughly research and understand the company, its products, and its compensation plan before getting involved. Some network marketing companies may operate as pyramid schemes, which are illegal and should be avoided. It is also important to be cautious of exaggerated income claims and to be aware that success in network marketing requires hard work, dedication, and the ability to effectively sell and recruit others. **