Warm-up
- 0.5 mile walk to gym
Intervals (10x)
- Walk 0.10 @ 3.3
- Sprint 1: 0.10 @ 6.0
- Walk 0.10
- Sprint 2: 6.5
- Walk 0.10
- Sprint 3: 7.0
- Walk 0.10
- Sprint 4: 7.3
- Walk 0.10
- Sprint 5: 7.5
- Walk 0.10
- Sprint 6: 7.7
- Walk 0.10
- Sprint 7: 7.8
- Walk 0.10
- Sprint 8: 7.9
- Walk 0.10
- Sprint 9: 7.9
- Walk 0.10
- Sprint 10: 8.0

Target Metrics
- Average HR: 140–150 bpm
- Peak HR: 170–180 bpm (briefly)
- Recovery: HR should drop 25–40+ bpm during each walk
- RPE: 8–9/10, not all-out
AVG HR - 151 BPM
MAX HR - 191 BPM
Recovery Afterward
- Walk 1.64 mile home
AVG HR - 117 BPM
MAX HR - 134 BPM
