Free Tool
TSB / CTL / ATL Calculator
Paste your last 42+ days of TSS values (Training Stress Score, one per line). We compute CTL (chronic load), ATL (acute load), and TSB (form) using the standard exponentially-weighted moving averages.
How RadiantHealth uses TSB
Your daily readiness score in RadiantHealth blends TSB with HRV, sleep, and resting heart rate. That way you don't have to decide if a +12 TSB day is a freshness signal or just a forced taper from illness — the briefing explains it.
Get TSB + HRV + sleep folded into one daily number
RadiantHealth ingests your wearable data and produces a single readiness score with a coaching briefing every morning.
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