Interval training
High-intensity interval training and its effects on muscle adaptation. Every Running Weekly story on interval training, newest first. 3 stories since September 2026.
- Intervals blunted strength gains 40%, not muscle growth
Brady Holmer says the cost of running hard alongside lifting shows up in performance, not in fiber size.
- Holmer says 2 minute intervals beat 30 second sprints
The physiology writer says time spent near your ceiling is what drives the adaptation, and short sprints never get there.
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- Study title says muscle keeps a memory of HIIT training
The journal posted the paper, Brady Holmer boosted it, and almost everything past the title is still unread.
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