Are you dreaming of visible, sculpted core muscles? To get there, you should introduce a properly developed ABS workout into your training routine – we've known for quite a while now that ordinary crunches
Activity zone 4F
In this zone, your heart rate rises at the mere thought of the next workout. You'll find the best ways to exercise effectively, discover new disciplines, and choose an outfit that suits your needs. We'll also guide you through the clothing care process and advise what to buy for enthusiasts of various sports. Our blog is a guide for everyone who wants to feel motivation 4 times more!
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Published: 4/25/2025🏃 Running|🚴 Cycling|🚶 Trekking|🔬 TechnologiesHow to get ready for outdoor training in any weather?
Heat, cold, wind, and rain – the ever-changing conditions outdoor sports enthusiasts face can be challenging… but they don’t have to be! Whether you’re hiking in the mountains, trail running, or cycling,
Read more- Published: 2/6/2025💡 Tips|🔬 Technologies
What is the NeoDry membrane in technical apparel, and what are its functions?
Choosing the right technical clothing is crucial for comfort and protection during outdoor activities. One of the most important elements that determines the functionality of a jacket or trousers is the
Read more - Published: 2/14/2024🚶 Trekking|💡 Tips|🏂 Winter sports|🔬 Technologies
What are the benefits of a membrane jacket?
Even when it gets really cold outside and the weather doesn’t particularly encourage us to leave home, it doesn’t mean we have to forfeit our favourite activities. A properly selected workout outfit guarantees
Read more - Published: 12/12/2023🏂 Winter sports|👟 Shoes|🔬 Technologies
PrimaLoft – discover the advanced technology in 4F’s winter footwear
An outfit that allows you to pursue your passions is a basic piece of equipment for anyone hitting the slopes or trails in winter. If you already have your jacket, trousers or thermal underwear ready, now
Read more - Published: 11/7/2023💡 Tips|🏂 Winter sports|🔬 Technologies
How to choose a ski/snowboard jacket?
Before heading off to enjoy winter break, many of us wonder which ski jackets will be the best and which particular model will ensure thermal comfort and desired breathability. Sometimes we wonder whether
Read more - Published: 10/10/2023🚶 Trekking|💡 Tips|🔬 Technologies
Membrane in clothing - what is it and how does it work?
Unfailing in harsh weather conditions, indispensable while hiking and enjoying your favourite outdoor activities – a shell layer in clothing. What is it, and how does it work? Let us explain it step by step.
Read more - Published: 9/22/2023🏂 Winter sports|🔬 Technologies
What are the properties of the Primaloft insulation?
When temperatures outside drop below zero, we look for solutions that will give us warmth and maximum comfort. Primaloft insulation will work perfectly. What is it, what are its properties, and why is it
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8 at-home exercises for perfectly sculpted ABS
Are you dreaming of visible, sculpted core muscles? To get there, you should introduce a properly developed ABS workout into your training routine – we've known for quite a while now that ordinary crunches
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Water retention in the body and training - how to avoid retention
Do you train regularly, eat meals of calorie content that should lead to a gradual weight loss, and still your scale shows the same result? You increase the intensity and the frequency of your trainings,
- 💡 Tips|🏂 Winter sports|🔬 Technologies
How to choose a ski/snowboard jacket?
Before heading off to enjoy winter break, many of us wonder which ski jackets will be the best and which particular model will ensure thermal comfort and desired breathability. Sometimes we wonder whether
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Exercises for seniors – a safeway to improve your fitness every day
Adulthood does not necessarily mean giving up physical activity. Quite the opposite! At this stage, sensible and regular movement becomes the best investment in everyday independence and well-being. Proper