And why you should make sure your Vitamin D levels are good and why circadian rhythms are important [[https://theconversation.com/heart-attacks-are-more-common-in-january-heres-why-70298?utm_medium=email&utm_campaign=Latest%20from%20The%20Conversation%20for%20January%209%202017%20-%206443&utm_content=Latest%20from%20The%20Conversation%20for%20January%209%202017%20-%206443+CID_7a566417552d8209c12adb2e0191f29e&utm_source=campaign_monitor_uk&utm_term=new%20research interesting article in the Conversation]]