> Though the caffeine in coffee may have a diuretic effect, it’s unlikely to dehydrate you.
> For caffeine to have a significant diuretic effect, studies show that you need to consume more than 500 mg per day — or the equivalent of 5 cups (40 ounces or 1.2 liters) of brewed coffee (12, 13, 14).
> A study in 10 casual coffee drinkers reviewed the impact of drinking 6.8 ounces (200 ml) of water, lower caffeine coffee (269 mg of caffeine), and high caffeine coffee (537 mg of caffeine) on signs of dehydration.
> Researchers observed that drinking the higher caffeine coffee had a short-term diuretic effect, whereas the lower caffeine coffee and water were both hydrating (15).
> In addition, other studies show that moderate coffee intake is as hydrating as drinking water (16).
> For example, a study in 50 heavy coffee drinkers noted that drinking 26.5 ounces (800 ml) of coffee daily for 3 days was equally as hydrating as drinking the same amount of water (16).
> Also, an analysis of 16 studies discovered that taking 300 mg of caffeine in a single sitting — equivalent to 3 cups (710 ml) of brewed coffee — increased urine production by only 3.7 ounces (109 ml), compared with drinking the same amount of non-caffeinated beverages (17).
> So, even when coffee makes you urinate more, it shouldn’t dehydrate you — as you don’t lose as much fluid as you originally drank.
https://www.healthline.com/nutrition/does-coffee-dehydrate-y...
I always keep a few in my pocket in case I start dosing off in meetings. A few live in the car to deal with drowsiness while driving, which was the issue that kick started my caffeine addiction when I was 15 and learning to drive. Nothing seems to put me asleep quite like driving on the freeway :(
I don't know man, I really like the coffee poop breaks.
Having to get up the chair every now and then and take my mind off work for a couple of minutes in silence followed by the sweet post poop satisfaction.
Nothing like it.
> About a hundred sixty years after Dr. Salter’s book was published, a review of studies was performed to see if coffee had any true impact on lung function and asthma. The authors wrote:
> “Caffeine is found in coffee, tea, cola drinks and cocoa. Caffeine is a drug that is very similar to theophylline. Theophylline is a bronchodilator drug that is taken to open up the airways in the lungs and therefore relieve the symptoms of asthma, such as wheezing, coughing and breathlessness. Scientists are interested in finding out whether caffeine has the same effect on the lungs as theophylline.”2
> And they concluded:
> “This review found that even small amounts of caffeine can improve lung function for up to four hours.”2
> Caffeine is a methylxanthine. It falls into the same family of medicine as theophylline, a strong bronchodilator that was a top-line asthma remedy during the 1970’s through the 1990’s. I was chronically dependent on theophylline from the mid 1970’s until 2007.
Who knew? And it’s from 1990.
Just like anything, a little bit can be good for you, but don't take too much - and stay hydrated! Preferably with plenty of sleep but I understand thats not always realistic for some.