Research
Cellular
Increases in muscle size are similar irrespective of the time of day at which the training is performed.
Muscle hypertrophy can be achieved regardless of whether training occurs in the morning or evening.
StrongSupportsmedium confidence
increases in muscle size are similar irrespective of the time of day at which the training is performed.
Why this rating
Based on systematic review and meta-analysis of multiple studies.
Source
The effects of time of day-specific resistance training on adaptations in skeletal muscle hypertrophy and muscle strength: A systematic review and meta-analysis
Jozo Grgić et al. · Chronobiology International · 2019
DOI 10.1080/07420528.2019.1567524
Meta-analysisCited 85×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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