PulseLab is an AI-powered training app for endurance athletes. It reads your sleep, HRV, energy, and training load every morning to calculate a PULSE Score (a 0-100 daily readiness number), then adapts your training plan overnight so you train at the right intensity.

What is the PULSE Score?

The PULSE Score is a daily readiness score from 0 to 100. It combines seven inputs: sleep quality (20%), HRV (20%), energy level (15%), soreness (15%), training load (15%), nutrition (10%), and training streak (5%). Scores above 80 mean you are ready to push hard. Below 50, Coach Zo will ease back your session or insert a rest day.

Coach Zo is PulseLab's AI coaching layer. It adapts your training plan each night based on your PULSE Score, sends proactive fatigue alerts, answers your training questions, and delivers a Monday Briefing every week reviewing the previous week and previewing the next.

Is PulseLab only for triathletes?

No. PulseLab is built for all endurance athletes: triathletes, marathon runners, ultramarathon runners, duathletes, open water swimmers, gravel cyclists, and trail runners.

How does PulseLab differ from TrainingPeaks or Garmin Coach?

TrainingPeaks and Garmin Coach give you a fixed plan. PulseLab's plan changes every night based on how your body actually recovered. If you slept poorly or your HRV dropped, Coach Zo adjusts tomorrow's session before you even wake up.

How much does PulseLab cost?

The Athlete plan is $14.99 per month with a 14-day free trial and no credit card required. The Coach plan is $4.99 per month and supports up to 20 athletes. The first 500 members receive founding pricing locked for life.

When does PulseLab launch?

PulseLab is currently in private beta with a public launch planned for 2026 on iOS and Android. You can join the waitlist now at pulselab.fit.

FeatureApril 14, 2026

Cycle-aware training and fuelling alerts

PULSE Score now factors in menstrual cycle phase. Coach Zo automatically reduces intensity during the luteal phase and menstruation. Fuelling alerts also ship for GPS sessions over 45 minutes.

By PulseLab · April 14, 2026

PULSE Score now factors in menstrual cycle phase. Coach Zo automatically reduces intensity during the luteal phase and menstruation, with no manual adjustments needed.

Research shows female athletes experience measurably higher perceived effort and reduced recovery capacity during the luteal phase. PulseLab's cycle-aware model reads this data from Flo or Clue, weights it into the PULSE Score calculation, and tells Coach Zo to ease back load before fatigue accumulates.

We also shipped timed fuelling alerts that fire during GPS sessions over 45 minutes. The alert timing is based on your actual planned session duration, not a fixed interval, and reminds you to take on carbohydrates and fluid at the right moments during long runs and rides.

Both features are live for all Athlete Premium users.