Cold foam, spring core, natural latex, and gel are all materials commonly used in mattresses, and each has its own benefits. Cold foam provides a supportive and comfortable surface, while spring core offers good support and breathability. Natural latex is known for its durability and hypoallergenic properties, making it a great choice for those with allergies. Gel is often used for its cooling properties, which can help regulate body temperature during sleep. Ultimately, the best choice of material depends on individual preferences and needs for comfort and support. **

"Fitness natural" refers to achieving physical fitness and wellness through natural and holistic means, such as regular exercise, a balanced diet, adequate rest, and stress management. It emphasizes the importance of avoiding artificial enhancements or shortcuts, and instead focuses on sustainable and healthy lifestyle choices. This approach promotes overall well-being and longevity, rather than just physical appearance or short-term results. **

As an AI language model, I cannot make assumptions about individuals without concrete evidence. It is important to note that determining whether a fitness influencer is natural or not is a complex and sensitive issue. It is best to approach such matters with caution and respect for the individual's privacy and choices. It is important to focus on promoting a healthy and balanced approach to fitness and well-being, rather than speculating about someone's personal choices. **

One can still be considered a natural bodybuilder if they consume whey protein, as long as they do not use any other performance-enhancing substances or drugs. Whey protein is a natural and widely accepted supplement in the bodybuilding community, and it is derived from milk. As long as the individual's training and nutrition are natural and drug-free, they can still be considered a natural bodybuilder. **

It is difficult to definitively determine whether fitness YouTubers like Karl Ess, Alon Gabbay, Micha Janiec, etc. are natural or not without concrete evidence. While some of these influencers claim to achieve their physique through natural means such as diet and exercise, others have faced accusations of using performance-enhancing substances. It is important for viewers to approach their content with a critical eye and consider the potential influence of editing, lighting, and other factors that can impact their appearance. **