Today's workouts were fairly tough. After a tempo ride this morning, I did a short run (35 minutes), which included some three sets of repeats at lactate threshold pace. I've estimated this pace to be between 6:30 and 7:00/mi. Because the intervals were very short, I opted to do them at 6:30/mi pace. The graph for the run is at the right. You can see the little "humps" that indicates the interval work. My HR never really got into the threshold zone. I think that's because these intervals were so short that it was difficult for my HR to catch up with my effort. If I'd held the intervals for about a minute to a minute-and-a-half, I'd probably have seen HR levels closer to my calculated threshold level.
Tomorrow will (thankfully) be a pretty easy day. No running, and only an easy swim in the morning. Time to recover!
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