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Transform your cardiovascular fitness with the Norwegian 4x4 HIIT protocol - the scientifically-backed method used by elite athletes and researchers to dramatically improve VO2 max and heart health.
Apple の公開 App Store ページで現在確認できる項目です。App Store Connect の完全な商品一覧とは限りません。
Transform your cardiovascular fitness with the Norwegian 4x4 HIIT protocol - the scientifically-backed method used by elite athletes and researchers to dramatically improve VO2 max and heart health.
WHAT IS 4x4?
Four intervals of 4 minutes at high intensity (85-95% max heart rate), separated by 3 minutes of active recovery. That's it.
WHY IT WORKS
Developed by Norwegian exercise scientists, this protocol has been proven in clinical studies to:
- Increase VO2 max faster than traditional cardio
- Improve cardiovascular health
- Boost endurance and athletic performance
- Deliver maximum results in minimum time
SIMPLE TO USE
- Clear visual timer with audio cues
- Tracks your intervals automatically
- Works with any activity: running, cycling, rowing, or body weight exercises
- No complicated setup - just hit start
PERFECT FOR
- Runners looking to improve race times
- Athletes building aerobic capacity
- Anyone wanting efficient, science-backed cardio
- People with limited time for training
The Norwegian 4x4 protocol is one of the most researched and effective HIIT methods available. Stop guessing. Start training with proven science.
Download now and take the first step toward your best cardiovascular fitness.
最新の App Store 観測データに基づく回答です。
最新の観測ダウンロード価格は Free です。現在の決済価格は公式 App Store リンクで確認してください。
Apple の公開ページでは現在、このストアで 0 件の購入項目が表示されています。公開一覧は完全ではない場合があります。
