5000m of tempo has to be boring, I spoke with a Coach on the forum and this was the number one issue he had with CF 400m program (the athletes got very bored with all the repetitive high volume tempo running). I wonder would the athlete have more success with varied tempo - ex:
10x120 mb ball tempo
Rest 3min
6-5-4-3-2-1 tempo
Rest 3mins
10x120 bw calisthenics
Rest 3min
9x100 cut 50’s