Exercise while Fasting - How to time your workouts with fasting | Jason Fung

Learn why Extended Fasting may be right for you - https://youtu.be/UKYse-SxSv4

I fast for 22-23 hours per day for everyday and have one large meal around 6pm-8pm. I exercise 3 times per week and have them before I break my fast. After more than 8 months of practicing this, I have gone from 104kg (230lbs) to 81kg (181lbs). It is not much weight loss in those duration but I felt the healthiest I have ever been in my life at age 28 years. I felt that I have so much energy exercising during fasting state compare to consume meals before a workout. Having this, I encourage more people to fast and exercise. Dr Fung really knows this stuff!!!

Thank you. I was diagnosed with Type 2 diabetes 22 months ago while in the hospital four days with pancreatitis. I have been taking Basaglar and Humalog since then. First 25 units of Basaglar each morning for about a year, then increasing to 35 units, then a few weeks ago my doctor said to increase to 50 units each morning. I thought.. this is ridiculous (and expensive), there has to be a better way. Then I found Dr. Fung on YouTube and watched probably 15-20 of his videos, including several conference presentations. He really spoke to me and I ordered The Complete Guide to Fasting and The Diabetes Code. I finished The Diabetes Code a week ago...what an amazing explanation of what's going on inside my body. I have been doing 18/6 intermittent fasting for about 3 weeks, eating around 1000 calories around noon and another 1000 calories around 6PM. I have already lost 15 pounds and 4/4/22 was my first day without any insulin in almost two years. This is the best I've felt in a long time and now am excited with hope!

I have lost over 75 pounds. Down from 305. I Intermittent fast all day while working my construction job, and then eat between 5ish to 9ish. I also eat normally every weekend. Though I still almost naturally eat a lot less during the day even on non IF days. This has been amazing for me. I LOVE intermittent fasting. Has anyone noticed that IF totally changes your relationship with eating?? I don't even think about or desire to eat in my fasting periods. Huge for an over eater like me. Thanks for all your advice in and info Dr. Fung

When I first started exercising while fasting, I was a bit concerned on how my body was going to react. 3 years later of doing weight training and cardio while fasted has resulted in the best shape of my life. I'm 44 amd feel amazing. Tons of energy, no bloating and zero joint pain inflammation. My Tennis elbow and lower back pain have disappeared. 👍

Great video again! I didn't feel well enough to exercise until I lost my first 60-70lbs. Then I remember listening to one of your podcasts where you said to exercise as usual so I started back swimming last spring, about this time last year actually. I'm so glad I did! It felt sooo good and I've kept it up since and still swim laps twice a week. I actually feel my best and swim faster on my longer fasting days. I've ended up losing over 150lbs, even got my lifeguarding certification and now I'm working at my pool! What an amazing transformational experience. I'm loving my new life ❤️🙏😊. Thank you for all you do

I am on a 14 day water fast. I finished day 5 with a huge 3 hour hike in the colorado mountains 14000 ft elevation. And it was the most easiest hike ive ever done! My knees didnt hurt at all (which is a first for me). I had boundless energy. And i just felt AMAZING. And more spiritually intuned. And once we got baxk. Didnt have the urge to eat. Its amazing. Water fasting is amazing! And im not even sore! And my mosquito bites faded away quickly. Mind blown!!!

I rarely find myself hungry since I started fasting 👍🏽 24 hours fast is now easy ! 🥗

Fasting changed my life. It’s my superpower!

I've noticed that when I fast, the more I move, the better I feel. Plus, my motivation to get up and be active is higher. Does anyone else have a similar effect, or is it different in some way?

Hi Dr. Fung I want to thank you the other day when I bumped into you in the hospital. You were very patient with me, and I also appreciated that while you were on your way out, you gave me some of your time to answer a few of my questions. When I came back upstairs to my room, I showed how happy I was to finally get to meet you. You're awesome. When I come out of hospitall and recover, I'll then start my fast.

I fast every month for 5 days. I only drink water. I did this all 12 months in 2023. I’m doing it again in 2024 since the benefits were so amazing. The only thing I changed for 2024 is to start the year with a 21 day fast. I’m on day 17 and feel great. Again I’ve only drank water the entire time.

I hadn't eaten for a year, just coffee & water; when I started, I weighed 875 lbs , & now I am down to 170! 🙋🙏. I started eating a week ago☠️

I’ve been Doing this since January and it works. I do a 6 mile walk 5 days a week while in a fasted state …. I’m down 30 lbs in 3 months

I definitely prefer training in a fasted state because I think I get more out of it. But I also think sooner or later we will not have a choice. Food is becoming more expensive and harder to find. The world is increasingly becoming unstable. Weather patterns and a lot of places are really starting to suck. So I would rather try to do it in a controlled setting then finding out the hard way. That way when the real hard times really start, I will not suffer nor and near as much as most people will.

I'm 70-years old and tired of being per-diabetic and over weight. From Mr. Fung's books, my eating window is 5:00PM to 8:00PM daily for the past 90-days. While not eating, I do water, coffee, or tea only. I do a kettlebell or body weight workout (heart rate up to 95% of max several times) for 30 or so minutes daily, then walk 2 miles at a relaxed cool down pace (20-22 minutes per mile). My basal metabolic rate is about 2200 calories so I limit intake to 1700 calories daily with macros of 20% carbs (really low sugar), 50% good fats, and 30% protein. I've dropped from 235 lbs. in January to 212 lbs. today and am rarely hungry. I don't go in for blood testing until mid-July, so not sure what's going on with triglycerides, glucose, etc. Hopefully improving. Dr. Fung is a national treasure.

I feel awesome with exercising with fasting! I find I still don't have an appetite after. I never thought it was possible. I'm a woman who Lost 134 pounds over 15 months doing very very low to zero carb , IF, and doing NOTHING. just joined a gym with 50 more to lose.

Hello, I fasted 72 hours weekly over a 75 day period in 2021. I lost 40lbs. I walked 10 km per day even while fasting. It was no harder while fasting than during fed state.

I work in lawn care and general labor and I try to put the days I mow on my fasting days. And since there’s a lot of walking and full body usage involved, needless to say, I have seen some impressive results.

I'm starting my 1 year journey now at 270 pounds to 170 pounds 🙏🏽😇🤙🏾 .