Fitness
Running recovery and training load
How Praxis One tracks running recovery, sleep, heart-rate variability, and strain so easy days and hard days follow your body instead of a generic plan.
Running fitness is mostly a recovery problem. Easy mileage builds the base, and hard sessions only work when sleep and heart-rate variability say you are ready. Praxis One turns those signals into a daily recovery score and a strain score so a tempo day and a shakeout day are not a guess.
Zone 2 running, long runs, and race weeks all show up as training load. Pair that with resting heart rate: a rise of several beats over your baseline is a reason to shorten the session, not a reason to ignore the plan.