As weather in warming up and vacations are near the corner, I have a few questions:
1. Do you run the sub-thresholds in vacation? How do you handle it, e.g. in a remote-ish area? If roads are dangerous, do you keep your intervals short, around the hotel, or switch to some easy days until you return home?
2. With higher temperatures, do you slow down to keep it in the right threshold zone? e.g. my most recent workouts:
22.04: 5 x 4:30/1:15
25-26 degrees, moderately sunny, under the shade of trees around the park
ON: 5.08K @ 4:26 (177 HR)
OFF: 1.1K @ 5:40 (171 HR)
Total: 6.18K @ 4:39 (176 HR)
29.04: 5 x 5:00/1:15
18-19 degrees, very sunny, no shade at all
ON: 5.72K @ 4:22 (167 HR)
OFF: 0.97K @ 6:28 (158 HR)
Total: 6.69K @ 4:40 (165 HR)
Was it the right call to keep it in the 4:20-4:25 range last week for the same muscular/threshold level and let the extra HR only count for my body's extra effort to cool myself? Or should have slowed down a bit to keep the HR under control, too?
For reference, on 5th of April I ran 10K in 42:44 (4:16/km @ 173 HR)
3. Same question regarding heart rate in the context of warm weather but for easy days, I'm trying to keep it under 138 HR (70% of 197 HRmax) but in the last 2 weeks I had days with 25 degrees and was struggling to keep it under 139-141. As soon as I had cooler days, at 16-20 degrees, I had no issues going as low as 131 HR. Should I slow down until I'm fully used to warmer weather or just go by effort?
I guess, in short, I'm asking if I should go with effort, "feeling the kung fu" or trust the numbers and slow down temporarily until my body re-learns how to cool itself under higher temperatures. I'm usually very good at gauging the effort but I'm feeling guilty for going over the limits (like 138 HR cap for easy days).