Sea-Level Build · Jeffreys Bay

777 — The Climb

26 days to build the engine, protect the chain, and arrive fresh. May 25 → June 19. Then Arusha, then the mountain.
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◆ Your Heart-Rate Caps — set these after the field test

from Day 1 test
AEROBIC BASE — most sessions — — enter threshold —
STEADY / UPPER AEROBIC — long efforts — —
THRESHOLD — hard dune only — —
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