Tabata and 1200's

Today went up to running club and after a warm up we did a different type of training. It's called Tabata and its 10s easy 20s hard. We did 3600m of this but after every 1200m we had a 5 minute break. I didn't think it was that difficult because of the such long rest after only 1200m. We then did 2 hard 1200m reps. Felt great on the first one, but didn't kick as I wanted to save some for the second. Did the first in 3:49 so that was good. On the second, stuck with Tom for the first 600m before slowing down a bit. Kept trying to push on and ended up doing the exact same time. 2.5km cool down for about 11km all up.