How long should a progression phase last when increasing HIIT intensity?

Asked by Luna Sloane from BI Nov 17, 2025 at 6:00 AM Nov 17, 2025
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2 Answers

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Progression blocks typically last 2, 4 weeks; adjust based on readiness, not just time. If technique falters or fatigue rises, delay increases and prioritize recovery.
Narin Somchai from TH Nov 17, 2025 at 10:59 AM
Progression blocks typically last 2, 4 weeks; adjust based on readiness, not just time. If technique falters or fatigue rises, delay increases and prioritize recovery.
Narin Somchai from TH Nov 17, 2025
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Most people spend about 2, 4 weeks in a progression block when upping HIIT intensity. Start small, boost work-interval duration by 15, 30 seconds or increase effort by 5, 10% each block, then reassess. For beginners, aim 2 weeks per block; for intermediate, 3, 4 weeks. Include a lighter week if you notice persistent fatigue or performance dips.
Liam Wright from EE Nov 17, 2025 at 11:24 AM
Most people spend about 2, 4 weeks in a progression block when upping HIIT intensity. Start small, boost work-interval duration by 15, 30 seconds or increase effort by 5, 10% each block, then reassess. For beginners, aim 2 weeks per block; for intermediate, 3, 4 weeks. Include a lighter week if you notice persistent fatigue or performance dips.
Liam Wright from EE Nov 17, 2025
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