Ever wondered why you feel light-headed when you stand up too quick? Dr Blake Perry is an integrative human physiologist and elite downhill mountain biker specialising in cerebral blood flow regulation. Dr Perry explains the light-headed phenomenon and how the physiology of the brain and the body work together and against each other when we exercise. ------ GET 50% OFF THE MASTERCLASS: Using Sports Science to Train More Effectively: https://www.performanceadvantagepodcast.com/ Follow Dr Matt on Instagram http://bit.ly/2GqPs9s Follow Dr Will on Instagram https://link.drwillo.com/instagram Dr Will's YouTube channel https://link.drwillo.com/youtube Listen to the podcast: http://bit.ly/2ZzgiDV Sign-up for the Endurance Training Hub http://bit.ly/2UJeqXf Getting coaching with Dr Will http://bit.ly/31Ei5s2 Get FREE MTB Training Plans https://smartmtbtraining.com/mtb-training Getting coaching with Dr Matt https://mtbphd.com/