1. Reduce stress wherever possible, as stress has been shown to weaken immunity. Don’t worry about things you have no control over. Practise gratitude daily. 2. Exercise 5-6 days a week. Walking is particularly beneficial to lower stress levels and oxygenate your body. 3. Eat clean, nutritious food – fruit, vegetables, organic meat, fish, chicken, free-range eggs, good fats, nuts and seeds. 4. Avoid processed foods – too much grain, sugar, artificially-flavoured, coloured a