2 x 40 Tempo Workout 2

5 minutes of Warmup [ERG watts = 50% of FTP]
5 minutes of Warmup 2 [ERG watts = 60% of FTP]
40 minutes of Tempo [ERG watts = 75% of FTP]
5 minutes of Rest [ERG watts = 50% of FTP]
40 minutes of Tempo [ERG watts = 75% of FTP]
5 minutes of Cooldown