Pick a mode and press start. Voice and beeps call every switch, and the player counts your fast-phase minutes — the number the research says drives your results. Only Study-Style 3-3 is the original protocol; the others are BPF onboarding steps.
Unfinished session found
Where are you walking?
Optional scenery
Silent scenery · coach guidance and your music stay separate.
Choose your session
New here? Spend weeks 1–2 in Beginner Bridge, weeks 3–4 in Build, then move to Study-Style 3-3 for weeks 5+. Track fast minutes as an evidence-informed dose marker, not as a medical requirement. Set effort by feel: fast = short phrases only, easy = talk freely.
Support walks — not the research protocol
Study-Style 3-3
Ready
00:00
Press start
Screen-awake protection will turn on when the session runs.
Log this session
You flagged a warning symptom. Stop for today and, if it's happening at rest or persists, seek medical care. The Safety Gate explains the red flags.
Educational interval-walking support built on the Interval Walking Training research (Nose & Masuki, Shinshu University). Not medical advice; does not diagnose or treat any condition. Stop and rest for chest pain, dizziness, or unusual shortness of breath. · JIW Hub · Safety