How does TrainAsONE handle temperature and weather?

Training in challenging weather conditions, such as extreme summer heat or freezing winter cold, places a unique demand on your body. Rather than assuming every run takes place under perfect conditions, TrainAsONE uses a dynamic, weather-aware approach to adjust both your training plan and the analysis of your completed workouts.

Here is how the TrainAsONE algorithm manages the impact of temperature and weather:

1. Environment Adjusted Pace (EAP)

Before your run, TrainAsONE looks at the weather forecast and anticipated route elevations for your location to calculate an Environment Adjusted Pace (EAP):

• Automatic Pace Modification: If a high degree of undulation and / or temperatures are anticipated, the system automatically slows down your target paces. This helps keep you in the correct metabolic zone for your workout, preventing over-exertion.
• Control Settings: This feature is controlled by the Temperature and Undulation adjustment setting in your Profile. If you choose to turn this off, target paces are specified assuming ideal conditions (flat terrain, 14–16°C), and you will need to manually adjust your paces.
• Please note that TrainAsONE currently does not account for humidity. This is on the development roadmap.

2. Thermoregulatory Load and Post-Run Analysis

When you run in high temperatures, your body generates significant heat. To cool itself, your thermoregulatory system redirects blood flow to the skin and increases sweating. This thermoregulatory demand raises your heart rate for a given running speed:

• Temperature-Aware Evaluation: When you upload a completed run, TrainAsONE analyses your metrics in the context of the temperature you actually experienced.
• Protecting Your Fitness Profile: Because the AI understands that a higher heart rate in the heat is a thermoregulatory response rather than a drop in your fitness, it adjusts its calculations accordingly. This ensures your overall fitness profile and future predictions remain accurate.

3. Incorporating Perceived (Subjective) Effort

Physiological data like heart rate and GPS are only part of the story. In extreme conditions, your subjective feeling of exertion is a vital metric:

• The Run Confirmation Card: After completing a run, check your Dashboard to confirm the workout and provide feedback on your Perceived Effort (RPE).
• Calibration: This subjective feedback tells the AI how demanding the run felt. The system combines this with heart rate and pace data to get a more reliable picture of the effect of environment on your physiology and fatigue levels.
• See our guides on Perceived Effort and How do I use TrainAsONE?.

4. Running to Heart Rate or Effort on Hot Days

On exceptionally hot days, safety and recovery are paramount:

• Never Be a Slave to Pace: Prioritise heart rate or perceived effort (RPE) over your target pace. If staying in your target heart rate zone means walking or running much slower, that is completely correct. You will still achieve near-optimal aerobic adaptations without putting your health at risk.
• Dynamic Recovery: If you need to cut a run short or slow down significantly due to the weather, log the run as usual. The AI will dynamically recalculate and adapt your upcoming plan based on the actual load and fatigue experienced.
• For advice on managing pace and heart rate discrepancies, read When I run to pace, my heart rate is outside the range specified by TrainAsONE. What should I do?.