Workouts
Workout
40/20s – 4 Sets of 8
HIIT
70 min
IF 0.53
Four shorter sets of 40/20 intervals at 120% FTP. The same intermittent VO2 stimulus as the 3×10 version, broken into four digestible sets.
Duration
70 min
Blocks
5
Intensity
0.53
Workout analysis
Session profile and interval structure.
warmup · 55%12 min
Repeat 4 times
Repeat 8 times
active · 120%40s
recovery · 55%20s
recovery · 55%4 min
cooldown · 45%10 min
Training purpose
VO2-focused intervals raise aerobic ceiling and repeatability for attacks, climbs, and hard surges.
Useful when you want sessions that match tags such as 40/20, VO2 Max, HIIT.
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Session summary
Ratings, tags, and related sessions.
Tags
40/20
VO2 Max
HIIT
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