Tried to do 250m sprints. Was going to do 12 or so and couldn't do more than 5.

1:37.2 / 38
1:38.0 / 37
1:37.0 / 40
1:39.0 / 39
1:49.8 / 33

Avg - 1:40.1 / 37

Died completely on the last one. Need to find a pace that I can do 12 on and work from there.