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Drinking strong coffee before exercising increases fat-burning, new study finds

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228 points curmudgeon22 | 1 comments | 28 Mar 21 17:14 UTC | HN request time: 0s | source
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PragmaticPulp ◴[28 Mar 21 17:42 UTC] No.26612365[source]▶
> Subjects ingested 3 mg/kg of caffeine or a placebo at 8am and 5pm

3mg/kg is over 250mg of caffeine for an average weight man. Twice a day makes that 500mg.

An 8.4oz can of Red Bull contains 80mg of caffeine. They were giving these people an amount of caffeine equivalent to 6 cans of Red Bull. Not a perfect comparison because Red Bull contains other ingredients, but that's still a lot of caffeine. For another point of reference, that's 2.5 shots of 5 hour energy (200mg caffeine per bottle).

To top it off, the subjects were caffeine-naive, so they had no caffeine tolerance. They must have been feeling extremely energetic.

No wonder they burned more fat. I'm not sure this is going to translate to your casual coffee drinker or someone with a high caffeine tolerance.

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hombre_fatal ◴[28 Mar 21 18:41 UTC] No.26612954[source]▶
Almost seems like you're trying to sensationalize it by changing it to Red Bull, something that's actually pretty low in caffeine once you put marketing aside.

How about comparing it to Starbucks' regular hot coffee sizes?

- Short - 180 mg

- Tall - 260 mg

- Grande - 330 mg

- Venti - 415 mg

Is drinking a 12oz Tall at Starbucks really dropping your jaw?

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seaman1921 ◴[28 Mar 21 19:04 UTC] No.26613156[source]▶
Yes drinking two 12oz Talls at Starbucks every day is not good for your sleep.

Nespresso capsules have 60g for reference.

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halfmatthalfcat ◴[28 Mar 21 20:00 UTC] No.26613856[source]▶
Source? I drink a fair amount of coffee every morning (not any after 10am) and never had any sleep issues. The half life for caffeine is somewhere around 6 hours, no?
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1. enominezerum ◴[29 Mar 21 15:44 UTC] No.26623511{3}[source]▶
Source is Anecdotal. I respond very well to caffeine, though I am a bit dependant on it. My wife, nothing. I can drink a Monster and feel good.

I am 6' 240lbs, she is 4'6" and 90lbs. I can almost microdose caffeine depending on what I am doing... Sometimes it is an energy drink, sometimes cold brew undiluted, sometimes drop coffee. Shoot, at Starbucks I tend to be a "green eye" type of man and laugh when they ask if I want space for creamer.

Unless I pound back a massive amount of caffeine within 2-3 hours of bed I have no issues sleeping; then again, I have never had issues sleeping and the few times I do forget and drink caffeinated before bed, it only delays me a few hours or results in me reading a novel into the night.