If young guys drink a protein shake with 30 grams of casein before bed after working out, their bodies keep building muscle overnight better than if they don’t.

Pro

Against

Evidence from Studies

Supporting (1)

Community contributions welcome

Presleep dietary protein-derived amino acids are incorporated in myofibrillar protein during postexercise overnight recovery.

Randomized Controlled Trial

Human

2018 May 1

Contradicting (0)

Community contributions welcome

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

Presleep dietary protein-derived amino acids are incorporated in myofibrillar protein during postexercise overnight recovery.

Score: 44

DOI: 10.1152/ajpendo.00273.2016

Similar Assertions

If young, healthy guys drink a protein shake with 30 grams of casein before bed after working out, their muscles may recover better overnight because their bodies are building more protein while they sleep.

97%

If healthy guys drink a protein shake with 20-40 grams of casein right before bed, their bodies keep building muscle overnight — even if they worked out earlier in the day.

91%

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.

90%

If young guys work out and then drink a protein shake before bed, it doesn’t help their muscles’ connective tissue build more overnight — not any more than just working out alone.

84%

Drinking a protein shake with casein before bed helps your muscles grow and get stronger while you sleep, especially if you're working out.

84%