Eating regularly provides your body and brain with a constant source of fuel, preventing dips in your blood sugar levels, which affect your mood.
Eating protein with every meal helps slow the rate at which carbohydrates are absorbed into your blood. The slower this happens, the more upbeat you’ll feel after you’ve eaten.
Drink plenty of water. oild dehydration can make you feel lethargic, which may make you feel grumpy and out-of-sorts.