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
Vegetables, legumes
Fresh fruit
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]