World's first wearable lactate monitor
Performing at your peak requires understanding the relationship between your training intensity, lactate threshold, and your body's ability to clear lactate. Cori captures real-time lactate data to coach you towards optimal performance.
Your lactate threshold is the exercise intensity at which lactate begins to accumulate in your blood faster than it can be removed. Knowing this precise point is crucial for optimizing your training.
Cori continuously monitors your lactate levels during exercise, identifying your exact threshold without the need for invasive blood tests or stopping your workout.
Cori divides your training intensity into personalized zones based on your lactate levels, helping you target specific physiological adaptations.
Low lactate levels, ideal for active recovery and building aerobic base
Moderate lactate, enhances aerobic capacity and fat utilization
Approaching threshold, improves lactate clearance capacity
At lactate threshold, maximizes sustainable power output
High lactate production, develops anaerobic capacity and power
How quickly your body clears lactate after intense exercise is a key indicator of recovery status and fitness level. Cori tracks your clearance rate in real-time.
Understanding your personal lactate clearance patterns helps you determine optimal rest periods between intervals and identify when you're fully recovered between training sessions.
As your fitness improves, your lactate profile changes. Cori tracks these changes to provide objective evidence of your progress and help you refine your training approach.
Sustain higher intensities before lactate accumulates
More efficient energy production at moderate efforts
Quicker recovery between high-intensity efforts
Ability to perform at higher intensities for anaerobic efforts
Make every workout a step toward greatness.
Lactate is more than just a waste product—it's a critical biomarker that provides insights into your metabolism, training intensity, and recovery status.
Traditional heart rate zones can lag behind metabolic changes. Lactate provides immediate feedback on your actual physiological stress.
Track how your body utilizes different energy systems and improve your metabolic flexibility for better performance.
Elevated baseline lactate can indicate incomplete recovery or overtraining, helping prevent injury and burnout.
Optimize rest periods during strength training based on your personal lactate clearance patterns.
The line that sets pace and purpose.
Your lactate threshold is the key to optimal intensity. Train below it for endurance, above it for power—if you know where it is. Continuous lactate exposes LT1/LT2 in real time, not just in a lab.
Lactate is fuel, not waste.
Track production and clearance to keep energy high and fatigue low. When clearance can't match production, you're accumulating—dial effort to stay in the right zone for the goal of the day.
Know exactly when to go again.
Clearance rate tells you when your system is ready for the next interval. No guessing—just physiology guiding the plan so quality stays high and training stacks correctly.
Train in exactly the right zone for your goals—endurance, threshold, or VO2 max power
No more junk miles or wasted sessions—every minute of training delivers results
Know when to push harder and when to back off—avoid burnout and injury
Monitor lactate clearance to optimize rest intervals and training frequency
| Criterion | Heart Rate | Power Output | Lactate |
|---|---|---|---|
| What it measures | Cardiovascular response | External mechanical work | Internal metabolic stress and fuel usage |
| Speed of response | Delayed (lags behind intensity changes) | Instantaneous | Instantaneous, reflects cellular demand |
| Sensitivity to fatigue | Indirect, often masked by external factors | No fatigue signal | Rising baseline directly reveals accumulated fatigue |
| Adaptation insight | Can't track physiological improvements directly | Shows performance, not internal response | Tracks how your body adapts to training over time |
| Personalization potential | Varies day to day (stress, sleep, caffeine) | Same output may mean different effort | Signal is specific to your physiology and session |
| Fuel usage insights | No | No | Indicates aerobic vs anaerobic energy contribution |
| Threshold detection | Approximate (e.g. Zone 2 guesswork) | Not physiological | Detects true LT1 / LT2 in real time |
| Practical value for training | Easy to measure, but limited insight | Good for pacing, not physiology | Enables training guided by your internal state |
Every rep, every interval, every workout - optimized.
Science-Driven | Real-time | Performance