SPINPower® Threshold Ride

SPINPower® Threshold Ride is a 1:1 proportion between Zone 1 and 3
Work at 85% to 105% of your PST for 3 min. max.
(example 1 min. at 105%, 1min. at 85% and 1 min. at 100%)
(or 1min. at 100%, 1 min. at 85% and 1 min. at 105%)
followed for 3 min. at zone 1 lower than 60% of your PST.
12 min. Warm Up
03 min. Zone 3
03 min. zone 1
Repeat on Flat's and on Hill's
Enjoy your progression ;-)