Research

Hormonal

Repeated morning resistance training can blunt the typical diurnal variation in strength performance, effectively increasing morning strength to match afternoon levels.

If you are forced to train in the morning due to schedule constraints, do not worry about the 'afternoon peak' myth. Consistent morning training will adapt your body, increasing your morning strength to levels comparable to the afternoon. The key is consistency; your body will adjust its circadian strength rhythm to match your training schedule.

ModerateSupportsMEDIUM confidence
However, the diurnal variation in strength performance can be blunted by a repeated-morning resistance training protocol.
Lawrence D. Hayes et al. · Chronobiology International · 2010

Why this rating

Based on cited studies (Souissi et al., Sedliak et al.) within a review.

Source

INTERACTIONS OF CORTISOL, TESTOSTERONE, AND RESISTANCE TRAINING: INFLUENCE OF CIRCADIAN RHYTHMS

Lawrence D. Hayes et al. · Chronobiology International · 2010

DOI 10.3109/07420521003778773

narrative_reviewCited 169×
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DOI resolved against Crossref · corpus check 2026-06-10

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