See Inside Your Muscles — The Future of Performance Training.
Every movement starts inside the muscle. Yet most athletes train blind to what’s happening beneath the skin.
The Train.Red FYER 2.0 changes that. Using advanced near-infrared spectroscopy (NIRS), it monitors muscle-oxygen saturation (SmO₂%) and total hemoglobin (tHb) in real time, revealing how each muscle performs, fatigues, and recovers.
⚙️ What Is Train.Red FYER 2.0?
Train.Red FYER 2.0 is a lightweight sensor that attaches to your skin over a target muscle (for example, quadriceps, biceps, or calves).
It emits harmless near-infrared light and analyzes the reflected signal to determine oxygen delivery and usage.
The data syncs instantly with the Train.Red app, available for iOS and Android, displaying live graphs, metrics, and training summaries.
🧬 The Science Behind Muscle Oxygen Monitoring
When you exercise, your muscles use oxygen to produce energy.
By measuring SmO₂%, the FYER 2.0 shows:
- How efficiently your muscles receive and use oxygen.
- When the muscle becomes oxygen-depleted (fatigued).
- How quickly it re-oxygenates (recovers).
This insight helps athletes optimize work-to-rest ratios, prevent overtraining, and tailor warm-ups and cool-downs precisely.
📈 Core Metrics Tracked
- SmO₂ (Muscle Oxygen Saturation) – the balance between oxygen delivery and consumption.
- tHb (Total Hemoglobin) – blood volume indicator for perfusion.
- Oxygen Desaturation Rate – how rapidly oxygen is consumed during exertion.
- Re-oxygenation Rate – how fast muscles recover post-effort.
- Training Zones – automatic color-coded zones for endurance, threshold, and sprint work.
💪 Why It Matters to Athletes and Coaches
With FYER 2.0, every repetition becomes measurable science.
- Detect muscle imbalances — compare right vs left legs.
- Identify fatigue thresholds — know when performance drops.
- Adjust training intensity in real time based on oxygen availability.
- Enhance rehabilitation protocols by tracking muscle recovery progress.
Professional cycling teams, Olympic trainers, and sports scientists use NIRS monitoring to personalize training loads for each athlete.
🧠 How It Differs from Traditional Trackers
- GPS and Heart-Rate Devices: show movement and effort.
- FYER 2.0: shows what’s happening inside the muscle.
It translates invisible physiology into actionable insight.
No estimations — just direct data from the source of your power.
🏋️♂️ Real-World Applications
- Strength Training: determine the optimal number of sets before fatigue.
- Endurance Sports: find your muscular aerobic limit for better pacing.
- HIIT and CrossFit: monitor oxygen drop and recovery within each interval.
- Rehabilitation and Physiotherapy: quantify recovery progress objectively.
- Team Sports: analyze position-specific load on target muscles.
📱 The Train.Red App
The companion app turns raw data into actionable dashboards:
- Real-time graphs of SmO₂ and tHb.
- Automatic session summaries and trend analysis.
- Cloud storage for long-term progress tracking.
- Integration with heart-rate monitors and smart trainers.
- Export options for coaches and researchers.
📦 What’s Inside the Package
- Train.Red FYER 2.0 sensor.
- USB-C charging cable and adapter.
- Protective case for transport.
- Free access to Train.Red mobile app.
- Quick-start guide and calibration manual.
🧩 Train.Red + VO₂ Master = Complete Performance System
Used together, these devices create a complete performance ecosystem:
- VO₂ Master shows how your body takes in and uses oxygen system-wide.
- Train.Red shows how each muscle actually consumes that oxygen.
Together they connect breathing, circulation, and muscular efficiency into one coherent picture — the true science of human performance.
🏁 Summary
The Train.Red FYER 2.0 Muscle Oxygen Sensor bridges the gap between performance and physiology.
Whether you’re a coach fine-tuning elite athletes or an individual seeking to train smarter, this device delivers the clarity you need to push limits safely and effectively.
📞 Order Now
🌐 hyper-cool.com
📱 +966 56 670 9071
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