Are you acute or chronic?
is possible that i do some sport?like running or exercising?
Moderate amount is the key.
Self-care
If you've received a diagnosis of hepatitis B, your doctor will likely recommend certain lifestyle changes. These simple measures will help keep you healthy longer:
* Avoid drinking alcohol. Alcohol speeds the progression of liver disease.
* Avoid medications that may cause liver damage. Your doctor can advise you about these medications, which may include over-the-counter (OTC) medications as well as prescription drugs. It's especially important to avoid using acetaminophen (Tylenol, others), which can cause liver damage even in healthy people.
* Eat the healthiest diet you can. Eat fresh fruits and vegetables, whole grains and lean protein. Healthy foods help keep you strong, give you more energy and support your immune system. If you're nauseated, try eating small meals throughout the day. Choose foods that are soothing and easy to digest, such as soups, broths or a plain baked potato. A registered dietitian can be especially helpful if you have weight loss or trouble eating.
* Get regular exercise. Exercise helps increase your strength and energy levels.
* Get enough sleep. Rest when you need to.
From: http://www.mayoclinic.com/health/hepatitis-b/DS00398/DSECTION=10