Train Smarter, Not Just Harder
Stimulus provides a multi-dimensional analysis of your training, tailored specifically for the unique demands of ultrarunning and is the first platform to quantify the real stressors of ultra-endurance training, from eccentric load to heat acclimation.
The Science of Peaking
Fitness isn't permanent. Each specific adaptation—from heat acclimation to downhill resilience—decays at a unique rate. Stimulus is the only platform that models this decay, allowing you to intelligently plan your training and time your peak for race day with scientific precision.
The Art of Adaptation
Not all training is created equal. This chart models adaptation over a series of stimulus events. For most athletes, this means 2-3 key workouts per week, with the rest of the time dedicated to recovery. Notice how some adaptations show rapid gains that plateau (diminishing returns), while others build more linearly.
The Full Cycle: Build, Peak, Taper
Putting it all together. This chart simulates a realistic, periodized training cycle. Notice how focusing on specific adaptations (like muscular endurance, then vertical power, then altitude) causes those scores to rise, while others are neglected and begin to decay. This illustrates the fundamental trade-off in training: you can't improve everything at once. Foundational qualities like aerobic capacity and gut health are maintained with a low-level stimulus throughout, while a final taper where all stimulus is removed allows for recovery and peak performance on race day.
Race Demand Comparison
Different races present unique challenges. This chart visualizes the specific demands of four iconic 100-mile ultramarathons across our ten stimulus dimensions, highlighting why a one-size-fits-all training approach falls short.
Visually Plan Your Training, Not Just Your Workouts
Effective training is a balance between stress and recovery. Drag and drop stimulus types into your weekly training plan to see how your total load accumulates. Pushing too hard leads to overtraining and injury, while too little stimulus results in stagnation. This interactive planner helps you find the sweet spot and build a smarter, more sustainable training block.
Stimulus Palette
Fine-Tune Your Data
Your data isn't set in stone. Manually adjust subjective scores like mental resilience or perceived effort to ensure your adaptation model is a perfect reflection of your training.
Rate your session on a scale of low to high.