When you feel weak, it’s important to eat and drink foods that will help you regain your strength. Eating a balanced diet that includes plenty of fruits, vegetables, whole grains, lean protein and healthy fats will give you the nutrients you need to recover from weakness. Drinking lots of fluids, especially water, is also essential for rehydrating your body and keeping your energy levels up. If you’re struggling to eat or drink due to nausea or vomiting, try sipping on clear liquids like broth or unsweetened tea. And if you’re feeling really fatigued, consider taking a short nap to rest and rejuvenate yourself.