We all know what it feels like to be hungry, but what’s going on in your body and brain? Join us on a voyage deep into the biology of hunger.

What happens in your body when you’re hungry?

How does hunger work?

When you go without food, a series of changes happen in your body. Fasting may have benefits for your health, but there are risks to consider.

Is fasting good for you? Here's what science says.

Fasting may have benefits for your health, but there are risks to consider.

If signs of exhaustion are coupled with other symptoms, it could be a health condition. But if you’re lacking energy, eating the right foods for you could help.

Are you experiencing exhaustion?

Lifestyle changes can boost your energy if you are feeling exhausted.

Mindful eating involves being fully present when eating and preparing meals. Are there benefits? Here, learn tips and see what the research says.

Your guide to mindful eating

Is it worth a try?

Calories are a way to measure how much energy food provides. Here, we take an in-depth look at your daily energy needs.

How many calories should I be eating every day?

It’s important to be getting enough high-quality calories and plenty of nutrients in your diet.

Foods that rank low on the glycemic index (GI) affect your blood sugar levels more slowly. A diet rich in low-GI foods can have many health benefits.

What are low-GI foods good for?

Low-GI foods can be beneficial because they cause blood sugar levels to rise and fall more gradually.

Discover how different aspects of your lifestyle, metabolic health, and immune system contribute to your overall health.

Hunger and Energy

What happens in your body when you’re hungry?

Is fasting good for you? Here's what science says.

Are you experiencing exhaustion?

Your guide to mindful eating

How many calories should I be eating every day?

What are low-GI foods good for?

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