Coaching practices for Threshold Pace Interval Pace

Describe almost anything you are working through and IX Coach finds the practices whose real-world fit is closest. For Threshold Pace Interval Pace, these are the strongest matches in the current practice library.

Does this sound like the set of challenges you might be facing?

• There’s a pace I can hold comfortably and then a wall I hit fast where my legs flood and I have to back off, and that wall hasn’t moved in ages
• Every run of mine ends up at the same comfortable-but-not-easy pace, and I have a nagging feeling that running everything at one speed is exactly why nothing improves
• I try to keep up with the fast pace in the video and a couple of minutes in I get lightheaded and have to stop
• I think my easy runs are supposed to feel easy, but I always seem to drift into puffing too hard to talk
• On my hard intervals I’m never sure if I’m actually pushing into the high zone or just half-trying, and I also can’t tell when I’ve recovered enough to go again

Practices that may help

1. Lactate threshold training
   Train at the intensity just below where lactate spikes to push your sustainable pace higher.
   VO2 Max and Longevity: The Peter Attia Framework
2. Use Daniels’ pace zones to structure training at the right VO2max fraction
   Each training zone targets a distinct physiological adaptation — running everything at the same moderate pace trains nothing specifically.
   VO2max Training
3. Build pace gradually — 1 stroke/second before going faster
   Start at one stroke per second and add pace only when the abdomen leads cleanly at the current rate.
   Kapalbhati Pranayama, Made Practical
4. Train at conversational pace for aerobic base
   Keep effort low enough to speak in full sentences — the sweet spot for building aerobic capacity.
   The Talk Test: Gauge Exercise Intensity Without a Monitor
5. Use the broken-speech threshold for hard intervals
   When you can only get out single words, you are in the high-intensity zone — useful for timing interval work.
   The Talk Test: Gauge Exercise Intensity Without a Monitor
6. Internalize the rhythm to breathe without a pacer
   Practice with a pacer until the five-breaths-per-minute rhythm becomes automatic without counting.
   Coherent Breathing, Made Practical
7. Find your aerobic–anaerobic crossover with the talk test
   The moment comfortable speech breaks down marks your first ventilatory threshold — the ceiling of sustainable aerobic work.
   The Talk Test: Gauge Exercise Intensity Without a Monitor
8. Use RPE to set cardio intensity without heart rate monitors
   Target RPE 5–6 for aerobic base, 7–8 for tempo, 9–10 for intervals — all without needing a heart rate monitor.
   The RPE Scale
9. Walk briskly rather than just accumulating steps
   Pace matters as much as step count: brisk walking (roughly 100 steps per minute or 3+ mph) carries additional cardiovascular benefit.
   Walking 10,000 Steps: What the Research Actually Shows
10. Paced breathing: make the exhale longer than the inhale
    Breathe in for 4 counts, out for 6–8 — the extended exhale activates the parasympathetic nervous system.
    TIPP: DBT’s Crisis Skill for Rapidly Lowering Emotional Intensity

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