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IF and Tiredness

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Updated about 8 hours ago
Created February 28, 2014 at 1:28 AM

I normally do a 20/4 or sometimes a 23/1 schedule if I'm feeling saucy. However, most days I feel tired when I wake up and when I exert myself such as a lot of walking or climbing many stairs. I am unsure if I should supplement more than Sodium and Potassium? Or should I do something else? Thanks!

De1095b2ba29c1035f00428cbfe3cc7c
787 · March 01, 2014 at 7:36 AM

That's what i find, I generally eat 1 meal a day, one of the benefits being fat-adapted is being able to stay sharp all day without hunger. I agree that daily fasting beyond 16hr isn't worth it unless you feel good doing so, it would be better to be more sporadic with it, then it would truly be IF and not a routine you adapt to. If you adapt to a routine then you're possibly no longer getting the stress response benefits. I tend to eat 20/4, or 18/6, 16/8, sometimes go a full 24, then a 3 day fast or more once or twice a year. IF should be intermittent not a set in stone routine

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 11:24 PM

Yeah. I'm pretty sure I'm going to try 18/6.

8fc1d7a8dc2318f960450a0de632bfe6
0 · February 28, 2014 at 2:10 PM

My calorie count is pretty much exactly the same as your's and I have also have found that when your calories are that low I prefer one or two meals a day because they are more satisfying.

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 12:42 PM

Actually, this week I had to change my schedule due to a work obligation and I haven't felt tired. I have been doing about a 14/10 schedule.

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 12:41 PM

I have heard that IF and keto goes hand in hand. I am a female and my calorie requirements are around 1300 so eating all of that in one or two meals is satisfying. And yes, I eat all of my 1300 calories, sometimes more, in my feeding window.

96440612cf0fcf366bf5ad8f776fca84
17384 · February 28, 2014 at 12:01 PM

+1 for saucy

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 1:52 AM

I eat in the evening. I couldn't switch to the morning because I cook for my husband when I get home from class (doctoral student) and it works better with our schedules.

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4 Answers

089dd41b18fbb95ebb5347cded708d98
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5650 · February 28, 2014 at 8:29 PM

i could not go that long not eating without feeling like a zombie. try lengthening your eating window to maybe 6 hours and see if you feel better. i usually do an 8 hour eating window because i'm pretty active during the day and wouldn't make it until dinner without feeling sluggish and lightheaded.

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 11:24 PM

Yeah. I'm pretty sure I'm going to try 18/6.

96440612cf0fcf366bf5ad8f776fca84
0
17384 · February 28, 2014 at 12:11 PM

When you go very low carb, you do need to raise salt and potassium levels, so yeah, spot on. If you do VLC, you shouldn't also do IF. So either pick VLC or IF, or you'll fail miserably.

But why such an intense IF window? Are you really eating 3 meals worth of food in 1 hour?

Also, studies on IF show that there's not much added benefit beyond 16 hours, and you might drop into muscle catabolism depending on activity levels.

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 12:41 PM

I have heard that IF and keto goes hand in hand. I am a female and my calorie requirements are around 1300 so eating all of that in one or two meals is satisfying. And yes, I eat all of my 1300 calories, sometimes more, in my feeding window.

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0
208 · February 28, 2014 at 5:08 AM

Eat more, change your schedule. Nobody is grading you on how many hours you can go without eating so ease up until it works for YOU. I do 16/8 everyday and have zero problems with it. As I approach 18 hours I start to feel like I need to eat, so I backed off to 16.

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 12:42 PM

Actually, this week I had to change my schedule due to a work obligation and I haven't felt tired. I have been doing about a 14/10 schedule.

8fc1d7a8dc2318f960450a0de632bfe6
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0 · February 28, 2014 at 1:51 AM

What time of day do you eat? I do a 24 hour IF a few times per week and have found that if I make it breakfast (within 2 hours of waking) it works best for me because then I have the energy I need to work all day. I get the same tiredness and weakness at the end of the day, but by then I don't need as much energy so it doesn't matter as much. Also, I stay very hydrated.

6f051f81f41a098890c77ebd7a5488c6
0 · February 28, 2014 at 1:52 AM

I eat in the evening. I couldn't switch to the morning because I cook for my husband when I get home from class (doctoral student) and it works better with our schedules.

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