Sub Threshold #4

Duration 58:00 TSS 65 IF 0.82 Has instructions

warmup 05:00 @ 45% FTP - 75% FTP

5x

00:30 @ 65%

00:30 @ 89%

02:00 @ 50%

03:00 @ 81%

02:00 @ 50%

ramp 10:00 @ 88% FTP - 94% FTP

03:00 @ 65%

ramp 10:00 @ 88% FTP - 94% FTP

03:00 @ 65%

ramp 10:00 @ 88% FTP - 94% FTP

05:00 @ 50%

Sub-threshold intervals are an integral part of building aerobic endurance. By training at an intensity slightly lower than the Anaerobic Threshold, you can complete large volumes of work with minimal anaerobic impact.

Completing sub-threshold intervals results in high oxygen consumption, boosting your aerobic system.

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