The large influx of glucose into the blood stream, and of caffeine to the brain, that energy drinks administer will make you feel like really getting after it. This was shown in a recent study by Iranian researchers, who compared the effects of two energy drinks, Red Bull and Hype, to the effects of flavored water on exercise performance when consumed immediately before exercise.
Maximal oxygen consumption and time to exhaustion were significantly greater after either of the energy drinks was consumed. So a sports drink with caffeine would work really well for you the first time you used it, not quite as well the second time, etc. But while the caffeine in any sports drink you used regularly would cease to boost your performance, its psychological effects would persist.
The immense popularity of energy drinks and the widespread use of caffeine by athletes has started many sports drink company executives to thinking. The result has been the recent emergence of a new sports nutrition category of pre-workout primers.
Currently, most such products are marketed to bodybuilders, who are notoriously supplement happy and who like to show up at the gym ready to bite the heads off bats. But the category is expanding into mainstream and endurance sports. Find out more at mattfizgerald. Curated running advice, news and perspectives for people who love to lace up. They can lead to difficulty sleeping, headaches, difficulty concentrating, anxiety, and irregular heartbeat.
Depending on the amount of stimulant in the beverage, over use can cause toxicity and even death. There is even the risk for physical dependence and addiction to the stimulants in these beverages. Caffeine stays around longer than people realize, impairing nighttime sleep that leads to daytime sleepiness and low energy.
It takes three to ten hours to clear even half a caffeine load from the body, and 15 to 35 hours to eliminate virtually all of it. And you can get a lot of sugar from the to ounce containers. Sugar-free versions are available, but energy drinks typically contain to calories, with over a quarter cup of sugar per ounce can.
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