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ERG mode explained

In ERG mode the app sets a wattage and the smart trainer adjusts the resistance so that you produce exactly that power – whether you pedal fast or slow.

When ERG is great

The trap: the “ERG wall”

If you slow down, the trainer increases the resistance to keep the watts right. In an interval that can spiral: you pedal even slower, it gets even harder. Tip: keep your cadence deliberately high (85–95), and keep pedalling briefly in rests.

Easier and harder

If an interval feels too hard today, that’s not failure. 5 % easier is better than stopping.

BLOX · BLOX sets the wattage in ERG mode, lowers it in rests and lets you adjust ±5 % at any time. Try it free

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BLOX is in beta and free until 31 January 2027. Pick your phone:

Android:

  1. Join the Google group (needed for the test)
  2. Open the test link
  3. Get BLOX from Google Play

iPhone: TestFlight installs first, then BLOX.

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