Did an interval session, again last night, this time I did 2:20 fast and 1:30 slow. Attempted 4 repetitions but managed only to get to about 3km's distance. I will repeat this session a few times until I am faster and can endure a complete 4 repetitions.
The Link below is the data recorded:
This time I was slightly faster overall than the last session, but only by a few seconds. Tonight I will do the same session again. I am trying to force myself to run with elevated heartrate.