Retaliate

Duration 38:20 TSS 35 IF 0.75

01:00 @ 50%

01:00 @ 58%

01:00 @ 63%

01:00 @ 68%

01:00 @ 75%

01:00 @ 50%

2x

01:00 @ 90%

01:00 @ 70%

02:00 @ 50%

02:00 @ 80%

02:00 @ 50%

01:00 @ 110%

02:00 @ 60%

01:00 @ 80%

01:00 @ 85%

01:00 @ 90%

01:00 @ 95%

04:00 @ 60%

02:00 @ 95%

00:10 @ 120%

01:00 @ 50%

02:00 @ 95%

00:10 @ 120%

01:00 @ 50%

01:15 @ 55%

01:15 @ 48%

01:15 @ 43%

01:15 @ 35%

The intervals are short enough to allow you to repeat the efforts. But hard enough to improve fitness.