Does eating protein before bed help muscles grow?
Effects of pre-sleep protein consumption on muscle-related outcomes - A systematic review.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
This study looks at whether eating protein right before bed helps muscles grow stronger and bigger overnight, especially after working out.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 520 / 100
Evidence Score
The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
This study looks at whether eating protein right before bed helps muscles grow stronger and bigger overnight, especially after working out.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 520 / 100
Evidence Score
The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.
Publication
Authors
Reis CEG, Loureiro LMR, Roschel H, da Costa THM
Related Content
Claims (5)
Drinking a protein shake with casein before bed helps your muscles grow and get stronger while you sleep, especially if you're working out.
Drinking a protein shake with 20-40 grams of casein right before bed might help your muscles repair and grow overnight — even if you worked out earlier in the day.
Eating protein before bed might help young guys build muscle and get stronger when they lift weights for 10 to 12 weeks, but it doesn’t seem to work as reliably for older men.
We're not sure if eating protein before bed helps older people build stronger muscles, even though it might help their bodies make more muscle overnight — we just don’t have enough long-term studies to say for sure.
If you're eating more protein overall, it might be that—not your bedtime snack—that's helping your muscles grow. So taking protein before bed might not be the real reason for better results.