Day 12

Aerobic Speed Endurance

Warm Up:

5 Minutes in Zone 2-3

+

3 Rounds:

30s. @Hard Effort [Zone 4]

**Build into that Pace**

30s. @Easy Effort [Zone 1-2]

+

2 Rounds:

4-Minutes. @Hard Effort [Zone 4-5]

**Build into that Pace**

2-Minutes @Easy Effort [Zone 1-2]

+

Cool Down:

5 Minutes in Zone 2-3