If you want to improve your health, clear your mind and decrease the risk of heart disease, it's important to ensure you have enough vitamin D – and the best source is simply from sunlight (with adequate protection of course). Studies have shown that vitamin D deficiency can increase your risk of heart disease by 64 per cent and can also help to lower blood pressure – so spending just 20 minutes each day outside could help protect your heart. Try adding a brisk walk to your daily activities – you will also be improving your respiratory and joint health. Turn off your phone, hide the laptop and find some time for you. Stress is one of the biggest threats to our overall health as it can lower the immune system, as well as making it easier to rely on stimulants such as caffeine and refined carbohydrates such as sugar for an artificial 'feel good' boost.