A high-protein snack before bed can have mixed effects on sleep. On the positive side, protein is filling and supports muscle maintenance and repair, so a small evening snack may help if you often feel hungry at night. When hunger keeps you awake or makes it harder to settle down, a satisfying snack could make bedtime more comfortable.

That benefit depends heavily on timing. Eating a high-protein snack too close to bedtime may work against restful sleep, even if it helps with hunger. Late-night eating can leave your body focused on digestion when it should be winding down, which may make it harder to fall asleep or stay comfortable overnight.

In other words, a bedtime protein snack is not automatically good or bad. If you regularly get hungry in the evening, having something earlier may help take the edge off without crowding bedtime. But if you eat right before lying down, the same snack could be more likely to disrupt sleep than improve it.

The main takeaway is that protein can be a smart choice at night because it is satisfying, but when you eat it matters. For people whose sleep is disturbed by hunger, a well-timed high-protein snack may help. For others, especially when the snack comes too late, it may be better to leave more space between eating and bed.