
Imagine drinking something before bed that helps your muscles grow while you sleep. Sounds amazing, right? Well, it’s actually possible, and science backs it up!
Dr. Mark Hyman recently shared on Instagram that a study found drinking 40g of casein protein about 30 minutes before bed could help your muscles repair and grow while you sleep. Casein is a type of protein found in dairy products, and it works slowly in your body to release amino acids over several hours, which helps your muscles recover overnight.

Here’s why it works:
Unlike other proteins that are quickly digested, casein takes longer to break down in your body. This slow release keeps a steady supply of amino acids available, which are important for repairing and building muscle tissue.
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A study found that people who drank 40g of casein before bed had better muscle repair throughout the night than those who didn’t. In fact, the study showed that casein protein boosts muscle growth and recovery during sleep, helping your body rebuild muscle tissue after a workout.
How can you add casein to your diet?
It’s easy! You can drink a casein protein shake, which comes in many different flavors. If you prefer natural foods, you can eat things like cottage cheese or Greek yogurt, which are also high in casein and make great bedtime snacks. Just make sure to have it about 30 minutes before you go to bed to get the best results.
Remember, while casein can help with muscle recovery during sleep, it’s not a magic fix. It’s important to also have regular exercise, a healthy diet, and enough rest to see the best results. If you’re thinking about changing your diet, it’s always a good idea to talk to a healthcare professional, especially if you have any health issues or dietary needs.