[hlnx1]

Heat pushes heart rate up, hills slow your pace, and feel changes day to day. How do you keep easy runs easy?

What I use:

• The talk test: if you can speak in full sentences, you’re easy
• A heart rate cap on top
• Pace only as a reference on flat routes in cool weather

The protocol: talk test for aerobic threshold.

Curious what others use.

[Author]

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