This week I discuss a January 2023 study comparing fasting, 90 minute light exercise and high intensity exercise when it comes to upregulating brain-derived neurotrophic factor (BDNF), a protein involved in neuroplasticity, learning and memory, and may underlie some of these neuroprotective effects. Here are the results:- Fasting for 20 hours caused a 9-fold increase in ketone body delivery to the brain but had no effect on any metric of BDNF in peripheral circulation at rest.- Prolonged (90 min) light cycling exercise increased plasma- and serum-derived BDNF irrespective of being fed or fasted about 6-8%- Six minutes of high-intensity cycling intervals increased every metric of circulating BDNF by 4 to 5 times more than prolonged low-intensity cycling; the increase in plasma-derived BDNF was correlated with a 6-fold increase in circulating lactate irrespective of feeding or fasting.Conclusion: Compared to 1 day of fasting with or without prolonged light exercise, high-intensity exercise is a much more efficient means to increase BDNF in circulation. So go out there and do some high intensity exercise either on a bike, sprinting, rowing, and/or swimming!Have a great day!Link to BDNF Study: https://physoc.onlinelibrary.wiley.com/doi/10.1113/JP283582If you love the Get Lean Eat Clean Podcast, we’d love for you to subscribe, rate, and give a review on Apple Podcasts. Until next time!Links:Watch Get Lean Eat Clean podcast video episodes on YouTube!LMNT: A tasty electrolyte drink mix that is formulated to help anyone with their electrolyte needs and is perfectly suited to folks fasting or following low-carb, whole food diets. Free gift with purchase:DrinkLMNT.com/getleaneatcleanhttps://www.21dayfastingchallenge.com/Upgraded Formulas hair mineral test (Coupon Code: GETLEAN10) :https://www.upgradedformulas.com/pages/kit?rfsn=6677062.f87541&utm_source=refersion&utm_medium=affiliate&utm_campaign=6677062.f87541X3 Bar: Variable Resistance Technology allows for a full body workout in only 10 minutes! Use discount code "Save50" for $50 off your purchase! https://www.anrdoezrs.net/click-100286468-13650338| Listen to the Get Lean Eat Clean Podcast |►Apple Podcasts | https://podcasts.apple.com/us/podcast/get-lean-eat-clean/id1540391210►Spotify | https://open.spotify.com/show/0QmJzYZsdV6tUNbDxaPJjS| Connect with Brian |►Website | https://www.briangryn.com►Instagram | https://www.instagram.com/bdgryn►Facebook | https://www.facebook.com/getleanandeatclean►Twitter | https://twitter.com/grynnerwinner