2

votes

Why do I feel tired after drinking a 2nd mug of coffee?

Answered on August 19, 2014
Created September 25, 2011 at 2:10 PM

I've noticed something weird. My first mug of coffee in the morning wakes me up (I had it at about 5:30am)

My second one (at 10:00am), made me feel sleepy a few minutes later.

If I do drink a lot during the day, I can't sleep at night, so I do get an effect from caffeine.

I usually have the 1st one with coconut milk + virgin coconut oil + BCAA +cinnamon. The 2nd one, I just had with just coconut milk and vanilla extract and nothing else, and it was about half the size.

Is this a coincidence, or is it a sign of something I need to pay attention to?

Df6dabaf4b1ef3d5db980ad64c501a5b

on March 01, 2012
at 04:13 PM

Glad to hear it's all working out. I'm curious as to how much of the fix is due to the cocoa, and how much is due to increased variation in beverages.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on February 29, 2012
at 06:05 PM

Good advice. I don't think I have issues with hydration. My fat loss scale also measures water levels and I'm at 60% in the morning, before drinking anything, so as I drink throughout the day, I'm sure I get enough. I do both green tea and coffee, but see the comment to alwayscurious above. I don't do any cardio, but I do IF several times a week, and a big high intensity workout on the weekend while fasted. About 1hr after that, I refeed with half a sweet potato, and later have a protein/fat meal.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on February 29, 2012
at 06:02 PM

Thanks for the link to the paper, looks interesting. I'm ok with this issue now, the fix has been to add a teaspoon of cocoa powder to the coffee. These days I consume a 16oz green tea + tulsi (holy basil) tea as well (1 bag each in 16oz water) as a mug in the morning and one later on, and I seem to do better. The coffee isn't (always) full strength, I reuse the grounds to make more, has the same flavor, but far less caffeine, and it avoids the possibility of hexane decaffeinated coffee.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on October 30, 2011
at 02:39 PM

So after a month or so of adding in cocoa powder to the coconut oil + a tablespoon or two of hot water before adding in the coffee, this effect completely went away. (Cocoa powder contains lots of magnesium, the hot water helps destroy phytates in the cocoa.)

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 28, 2011
at 01:45 PM

I think I found something: http://findarticles.com/p/articles/mi_m0887/is_n10_v13/ai_15882996/ says that caffeine leeches out both Magnesium and Calcium. "Urinary excretion of calcium and magnesium was significantly elevated for six hours after the second dose of caffeine."

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 25, 2011
at 06:36 PM

Could be. I'll try to drink more water the next time and see if it goes away.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 25, 2011
at 06:36 PM

It's sort of reoccurring, but rare, which is why I've asked. I normally continue to get a boost from coffee. I've had days where I've IF'ed this way, by having coffee every two hours with coconut oil/milk and not felt the urge to eat at all.

77877f762c40637911396daa19b53094

(78467)

on September 25, 2011
at 04:29 PM

I agree with the "dirty energy" feeling. It's fake feeling and cheap.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 25, 2011
at 02:35 PM

Yesterday I had an intense workout, diet was good, things like roast lamb, bacon, eggs, veggies. I did sleep late ~11pm, but somehow woke up automatically at 5:30 without any alarm clock. Might be lack of enough sleep, or adrenals...

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11 Answers

4
F2eb9c945a9afb8dfe06e6ea99fcb34b

on September 25, 2011
at 05:29 PM

This happens to me too. I think it may be related to dehydration. It usually happens when I've had too much coffee and not enough water...

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 25, 2011
at 06:36 PM

Could be. I'll try to drink more water the next time and see if it goes away.

4
9d8b1ca66aba8d9fa784689c222615c6

on September 25, 2011
at 02:31 PM

My understanding is that the tiredness comes from adrenal burnout. Love to read other responses.

2
96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 28, 2011
at 01:47 PM

I think I found something:

Effect of caffeine on calcium and magnesium excretion

says that caffeine leeches out both Magnesium and Calcium.

Urinary excretion of calcium and magnesium was significantly elevated for six hours after the second dose of caffeine.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on October 30, 2011
at 02:39 PM

So after a month or so of adding in cocoa powder to the coconut oil + a tablespoon or two of hot water before adding in the coffee, this effect completely went away. (Cocoa powder contains lots of magnesium, the hot water helps destroy phytates in the cocoa.)

1
Df6dabaf4b1ef3d5db980ad64c501a5b

on February 29, 2012
at 03:40 PM

When you consume caffeine it keeps your natural "downers" (adenosine) from limiting the rate of neural activity in the brain, hence the stimulating effect. However, with repeated exposure, the effect gets smaller as your body learns to anticipate this stimulant load and acts to mitigate this effect. As far as I know, research on the mechanism for caffeine tolerance is ongoing but is focused on sensitivity effects in adenosine receptors.

You mentioned your second cup was half the normal size. It's only my speculation, but it's possible that your body was anticipating (and compensated for) the caffeine load in a full cup of coffee. This lines up with what's known as "the situational specificity of tolerance" which has been observed in response to caffeine:

http://circ.ahajournals.org/content/108/6/e38.full

Feeling tired after taking a stimulant could also mean that your body is simply overstimulated in general, and that the stimulation side of the caffeine-balancing system is maxed out.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on February 29, 2012
at 06:02 PM

Thanks for the link to the paper, looks interesting. I'm ok with this issue now, the fix has been to add a teaspoon of cocoa powder to the coffee. These days I consume a 16oz green tea + tulsi (holy basil) tea as well (1 bag each in 16oz water) as a mug in the morning and one later on, and I seem to do better. The coffee isn't (always) full strength, I reuse the grounds to make more, has the same flavor, but far less caffeine, and it avoids the possibility of hexane decaffeinated coffee.

Df6dabaf4b1ef3d5db980ad64c501a5b

on March 01, 2012
at 04:13 PM

Glad to hear it's all working out. I'm curious as to how much of the fix is due to the cocoa, and how much is due to increased variation in beverages.

1
Fe87afa634afe26f4f6fd956abe0b46a

(565)

on September 25, 2011
at 04:19 PM

The same thing happens to me. I've been paying close attention to this for a long time. I think it has something to do with an allergy or intolerance to something in the coffee other than the caffeine. I can drink a lot of caffeine from other sources without problems. But too much coffee makes me dehydrated (more than normal), gives me anxiety, and makes me lag.

I feel like coffee gives me dirty energy. Like coal. It's a shame I love it so much. I have been told that if you have a mold allergy, coffee acts in much the same way as mold. Food for thought anyway.

77877f762c40637911396daa19b53094

(78467)

on September 25, 2011
at 04:29 PM

I agree with the "dirty energy" feeling. It's fake feeling and cheap.

1
40449b985898b088a64660b40f329f0f

(951)

on September 25, 2011
at 03:47 PM

I experience something similar and have found that I can feel when that next cup of coffee will not wake me up, if not make me more tired. I've found that what works beter is getting up and moving around as well as drinking some cold water. Why this happens I'm not sure, but I can say it doesn't happen when the coffee is spaced out by 5 or 6 hours.

1
A31b063c5866c08aa9968a8f2f1e9949

(1721)

on September 25, 2011
at 02:32 PM

My guess would be that it's not a coincidence--it's probably tied to something dietary or lifestyle (sleep patterns, wake-up time, exercise routines)--but that it's probably not tied to the coffee. Being that it's time-based, there could be any number of triggers that cause sleepy feeling shortly after 10:00. Since coffee does not have that effect on you at 5:30, I wouldn't think it would at 10 either.

Look at all of your dietary and lifestyle habits from the previous 12 hours or so, not just the coffee.

And it's always a good idea to go for a walk if possible. Movement helps get you awake.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 25, 2011
at 02:35 PM

Yesterday I had an intense workout, diet was good, things like roast lamb, bacon, eggs, veggies. I did sleep late ~11pm, but somehow woke up automatically at 5:30 without any alarm clock. Might be lack of enough sleep, or adrenals...

0
3649ec43040c573c77d3d66772971058

on February 29, 2012
at 11:44 AM

Several factors can cause this from coffee, coffee stresses the adrenal glands and gives you a false energy boost, over time those adrenals will become over stressed so you crash. Secondly coffee dehydrates your body. For every cup (not mug) of coffee you should drink 2 glasses of water. Recommended safe dose of coffee is 3 cups per day (not mugs or paper cups). It is not how much coffee you drink, it is for how long you have been drinking it. Coffee also upsets the stomach and intestines and makes them irritated. I recommend switching to green tea for a month. Green tea will hydrate you. But only drink 2 mugs per day, as green tea as been shown to stress the liver and kidneys. Drink about 2 liters of water per day for a month. Eat healthy, lots of fruits and veggies. Listen to your body.

I used to drink 5 to 6 mugs of coffee each day for a long time and do cardio workouts. Not a good idea. One day after my 5th coffee mug and exercise my body just died on me and i was about to faint. Luckily i was able to get a hold on some water and hydrate myself. But i do not wish this experience for you.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on February 29, 2012
at 06:05 PM

Good advice. I don't think I have issues with hydration. My fat loss scale also measures water levels and I'm at 60% in the morning, before drinking anything, so as I drink throughout the day, I'm sure I get enough. I do both green tea and coffee, but see the comment to alwayscurious above. I don't do any cardio, but I do IF several times a week, and a big high intensity workout on the weekend while fasted. About 1hr after that, I refeed with half a sweet potato, and later have a protein/fat meal.

0
32f5749fa6cf7adbeb0b0b031ba82b46

(41757)

on September 25, 2011
at 04:40 PM

Is this a one-time thing or a recurring phenomenon?

One-time thing: Hard to say it's more than a coincidence.

Recurring phenomenon: Hard to say what it is, could be a myriad of different effects. It's N=1, so it's up to you what you'd want to do about it. After all, many people (myself included) drink 2-3 times as much coffee in a day as you do without ill effect.

96440612cf0fcf366bf5ad8f776fca84

(19413)

on September 25, 2011
at 06:36 PM

It's sort of reoccurring, but rare, which is why I've asked. I normally continue to get a boost from coffee. I've had days where I've IF'ed this way, by having coffee every two hours with coconut oil/milk and not felt the urge to eat at all.

0
77877f762c40637911396daa19b53094

(78467)

on September 25, 2011
at 04:30 PM

As said before, I think it's adrenal burnout. Coffee stimulates your body, then overtime, you body becomes unable to really stimulate itself on its own, and when you're dependent on coffee for stimulation, then you will start being disfunctional once it wears off.

-1
77877f762c40637911396daa19b53094

(78467)

on November 27, 2012
at 09:00 PM

you wont feel this way if you drink organo gold check out organo gold. its healthy http://mycapturepage.com/cp23.php?id=470

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