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Articles and practical guidance about heart rate zones.
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Use this tag as a narrow lane through the same iPhone-aligned training guidance.
Published guides assigned to this tag will appear here.
iPhone product context
The blog explains the training decisions that Zone Training Log keeps visible inside the iOS-style product.
Training Log
Daily review, rest days, and workout cards stay close to the iPhone product.
Summaries
Long-range zone context for runners, cyclists, and mixed training blocks.
Settings
Apple Health, account sync, providers, and billing sit in one calm product family.
