If young guys who work out lift weights regularly, having a snack with about 30 grams of protein before bed might help them build more muscle and get stronger — especially if they don’t already eat a lot of protein during the day.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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The Impact of Pre-sleep Protein Ingestion on the Skeletal Muscle Adaptive Response to Exercise in Humans: An Update

Narrative Review

2019

The study shows that eating protein before bed helps muscles grow stronger and bigger when combined with weight training, which matches the claim.

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

The Impact of Pre-sleep Protein Ingestion on the Skeletal Muscle Adaptive Response to Exercise in Humans: An Update

Score: 1

DOI: 10.3389/fnut.2019.00017

Similar Assertions

If young guys who work out lift weights and drink a protein shake with about 30 grams of protein before bed for 3 months, they might gain more muscle and get stronger than those who don’t — especially if they’re already eating enough protein during the day.

1

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94%

If young, healthy guys lift weights for 12 weeks and drink a protein shake before bed, they might gain more leg muscle than those who don’t — about the size of a small egg more.

55

0

91%

If young, healthy guys drink a protein shake with some carbs before bed while lifting weights for 12 weeks, they’ll probably gain more muscle and get stronger than if they just drank a fake shake with no calories.

61

0

90%

Eating 20 to 40 grams of protein before bed might help your muscles repair and grow overnight, especially if you also worked out in the evening.

1

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90%

If young, healthy guys lift weights for 12 weeks and drink a protein shake before bed, they gain more strength—about 34 kg more—compared to those who don’t, according to one study.

55

0

89%