💪 Endurance
Aerobic capacity is built over the long term. Driftline raises weekly volume gradually and brakes before overload takes hold.
Focus areas
- Zone-2 base building
- Long ride / run progression
- Weekly TSS balance
- Recovery days
How Driftline intervenes
- Acute:chronic load > 1.3 → volume pulled back
- Pace drift → easy days added
- HRV trend → long-session timing