15min from 50 to 75% FTP12x 30sec @ 140% FTP,
5min @ 75% FTP
9min from 70 to 50% FTP
Workout overview

Duration: 1h 30m

Stress points: 101

Zone distribution

Z1: 10m

Z2: 1h 14m

Z3: -

Z4: -

Z5: -

Z6: 6m

11%
82%
0%
0%
0%
7%

Author: C.O'Hearn ZHR Masters

A variation on the Aerobic base endurance rides.
Try to get HR down to Z2 (about 70-72% max) in between the intervals, even if it means slightly lower power.
Good for getting in some endurance time while also building up fatigue resistance.

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