Go to https://nordvpn.com/medlifecrisis to get a 2-year plan plus an additional month with a HUGE discount. There's a risk-free 30 day money back guarantee. Sponsors help me keep this channel going in my free time, and I want you to get something useful while you're being generous enough to support me. It means a lot. Thank you! Sign up for my free newsletter: https://medlife.substack.com/ ----------------- More Medlife Crisis: https://twitter.com/medcrisis https://www.youtube.com/channel/UCXFgI0Lgrwc_fY2ttqQ9Yhg https://watchnebula.com/medlifecrisis https://www.instagram.com/medcrisis https://www.facebook.com/Medlifecrisis References: 2020 ESC Guidelines on sports cardiology and exercise in patients with cardiovascular disease: https://pubmed.ncbi.nlm.nih.gov/32860412/ The proinflammatory effects of chronic excessive exercise: https://pubmed.ncbi.nlm.nih.gov/30884427/ Source of the U-shaped curve: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451435/ Personalised exercise dose: https://pubmed.ncbi.nlm.nih.gov/29301027/ The effects of endurance exercise on the heart: panacea or poison?: https://pubmed.ncbi.nlm.nih.gov/32152528/ Exercise and the heart--the harm of too little and too much: https://pubmed.ncbi.nlm.nih.gov/25757005/ Training for Longevity: The Reverse J-Curve for Exercise: https://pubmed.ncbi.nlm.nih.gov/32848273/ (suggests a slightly lower upper limit for benefit) 0:00 Can you be so fit that you don't die 1:06 Why exercise is great, actually 4:49 Exercise dose - how much exercise 6:30 The U-shaped curve 8:42 Extreme exercise isn't benign 10:02 The main heart problem with endurance exercise 12:49 Coronary calcification 13:29 Other electrical problems 14:16 Some key messages 16:36 Why is this so important 17:29 On the roof