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Sympathetic nervous system, parasympathetic nervous system and cortisol - how stress controls our body

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Cortisol, sympathetic nervous system and stress

Stress is part of life. Without stress, we would probably hardly get out of bed in the morning, avoid challenges and simply not get many things done. For thousands of years, the human body has been designed to be able to react quickly in certain situations: Recognize danger, mobilize energy, act. In such moments, the organism runs at full speed - heart rate, breathing, alertness and muscle tension increase. This state can even be life-saving.

However, stress becomes problematic when it no longer ends. Many people today live in a state that no longer feels like acute stress, but rather like a permanently elevated baseline level. Deadlines, conflicts, a flood of information, constant availability - the body often reacts as if it is constantly in a potentially dangerous situation. However, while our ancestors were able to calm down again after a short period of tension, this phase of real relaxation is often missing today.

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ChatGPT data export explained: How your AI chats become a personal knowledge system

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ChatGPT data export

If you regularly work with an AI, then you probably know this: one thought leads to the next. You ask a question, get an answer, reformulate, develop an idea further. A short question suddenly turns into a longer dialog. Sometimes it even leads to entire projects.

But most of these conversations disappear again. They lie somewhere in the chat list, slide down and are forgotten over time. This is precisely one of the great features of modern AI systems: While previous conversations with colleagues, friends or advisors only existed in our memories, AI dialogs are completely preserved.

This means something crucial: With every conversation, a digital archive of your thinking is created. This is the first part of a small series of articles that will allow you to export your chat history from ChatGPT and use it effectively as a personal treasure trove of knowledge with your local AI system.

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Digital ownership explained - How sustainable online assets are created

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What is digital property

For centuries, property was something very tangible. You could touch it, walk on it or hold it in your hand. A house, a piece of land, a workshop, books on a shelf or tools in a drawer - these were all things that could be clearly assigned. They belonged to someone, were visibly present and generally remained so even when political, economic or social circumstances changed.

This article explains what digital property is, what forms it takes and how digital property can be created, especially in today's AI age.

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AI Studio 2025: Which hardware is really worth it - from the Mac Studio to the RTX 3090

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Hardware 2025 for AI studio

Anyone working with AI today is almost automatically pushed into the cloud: OpenAI, Microsoft, Google, any web UIs, tokens, limits, terms and conditions. This seems modern - but is essentially a return to dependency: others determine which models you can use, how often, with which filters and at what cost. I'm deliberately going the other way: I'm currently building my own little AI studio at home. With my own hardware, my own models and my own workflows.

My goal is clear: local text AI, local image AI, learning my own models (LoRA, fine-tuning) and all of this in such a way that I, as a freelancer and later also an SME customer, am not dependent on the daily whims of some cloud provider. You could say it's a return to an old attitude that used to be quite normal: „You do important things yourself“. Only this time, it's not about your own workbench, but about computing power and data sovereignty.

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