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It's extremely difficult to actually exercise over any long period of fasting. Beyond a few days your body just doesn't want to do it. You have mental energy,
by jki275 8y ago
It's extremely difficult to actually exercise over any long period of fasting. Beyond a few days your body just doesn't want to do it. You have mental energy, but physically getting enough energy to go do something beyond walking around gets rough.
- SketchySeaBeast 8y agoThat doesn't seem like a strong argument for wanting to fast.
- jki275 8y agoWell, it's a temporary thing..
- SketchySeaBeast 8y agoSame with the effects though, no?
- jki275 8y agoSeems not...
- avinium 8y agoI've been experimenting with fasting over the past couple of weeks. Yesterday I broke a 40-hour fast at lunch, then exercised around 6 hours later. I definitely didn't feel strong/energetic - but my numbers didn't actually suffer. That being said, it was a relatively short fast that started when I was glycogen-saturated. A longer fast that starts in ketosis might be different - which is what I'm planning to do next week (60 hours after 5 days of < 20g carbs).
- jki275 8y agoI think your numbers will go down on that one. You can get used to ketosis, many people do, but five days of it and then a fast is going to really suck.
- avinium 8y agoI honestly have no idea - you may be right. I'll report back next week.
- jki275 8y agoI'll be interested to hear. I'm going to start a 14 day water fast in about two weeks, and plan to do some light workouts while doing it.
- avinium 8y agoJust finished a 60 hour fast a few hours ago. 34/M/186cm/86kg. Last week was all keto, 4 weight training sessions and a 5km run on the first fasting day (Sunday, around 18 hours in). Run time was unaffected. First weights session post-fast will be tonight (i.e. after breaking the fast). The first 24 hours breezed by, but it started getting tough around hour 42. Note this wasn't hunger - I actually wasn't hungry at all. The problem was overall lethargy and feeling foggy/light-headed. I did bounce back after a few hours though, and although I felt very weak around hour 58, mentally I felt fine. Constantly felt very cold, too. I don't think the lethargy/weakness was due to dehydration (though drinking a lot of water on the second morning helped) or lack of sodium (was ingesting salt regularly). It could be lack of other minerals (potassium/magnesium). The worst is that it really interferes with my sleep. It takes me hours to get to sleep and then I wake up every couple of hours. I actually think I'm going to stop fasting for this very reason - it's not like I was doing this for weight loss, I was just experimenting to see how it felt. OMAD/IF will probably give me most of the health benefits of fasting without any of the drawbacks.