Eat after you exercise
To help your muscles recover and to replace their glycogen stores, eat a meal that contains both carbohydrates and protein within two hours of your exercise session if possible.
Should I eat immediately after workout?
After your workout, it's important to repair your muscles and replenish your glycogen stores for energy. Most experts recommend eating something within 90 minutes of finishing your workout, but sooner is better.
What happens if you don't eat right after a workout?
Sweating during exercise means you lose water as well as electrolytes, and if you don't replenish these you will start to feel dehydrated, which can leave you feeling tired and faint. And failing to eat after exercise can also impact your mood, it turns out.