Are you getting at least 30 minutes of physical exercise on at least 3 - 4 days of the week?
Do you get enough sunlight for Vitamin D production but not too much because sunburn increases the risk of melanoma?
Are you eating a variety of foods from the five main foods groups?:
Bread, cereals, rice, pasta, noodles
Milk, yoghurt, cheese
Meat, fish, poultry, eggs, nuts, legumes.
Are you getting enough Iron, B12 and Folate in your diet? If you are tired, consult your doctor for a blood test to exclude other causes and determine appropriate supplementation if needed. [People with a family history of haemochromatosis should have a blood test for the gene and should not take vitamins with iron]