Possible benefits
May support relaxation: Bananas contain magnesium and potassium, which help muscles relax.
Small boost in sleep-related nutrients: They have tryptophan (an amino acid your body uses to make serotonin and melatonin), but the amount is modest—not enough to knock you out on its own.
Light, easy snack: If you’re slightly hungry, a banana can prevent waking up at night due to hunger.
Possible downsides
Sugar content: It has natural sugars, which might give a slight energy bump for some people.
Digestion issues: If you’re prone to acid reflux or sensitive digestion, eating right before lying down could be uncomfortable.
Not a sleep hack: It won’t dramatically improve insomnia or fix poor sleep habits.
“Sleep-friendly” banana recipe
If you want to make it more effective as a bedtime snack:
Simple Banana Night Snack