Running 38:02  7.17 km (5:18 / km) +73m 5:03 / km
ahr:149 max:185 shoes: on Cloudflow Grey
1,2,3,4,4,3,2,1min with 1 min rest
Was okay until the end of the second 4 minute run, when inside of my left leg starting getting very tight. Possibly a groin thing, possibly a hip flexor thing, possibly a knockon from something else. Took it easy for the last 3,2,1 then walked back. Will roll on it tonight.
Paces were otherwise okay, but I got tires earlier than normal (understandable given my recent laziness).
3:35, 3:41, 3:43, 3:48, 3:51, 5:08, 5:06, 4:59...