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Does any form of pre workout help while exercising?

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We found out at the local gym that 40% of people actually take pre workout

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I decided to select the closest gym we could find to me and ask people that walked through the door if they took and sort of food or drink to prepare them for exersicing.

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I gave a sample energy drink to the people that came into the gym, the first hour I was there, I told them to take it before they came back to the the gym tomorrow. And the second half I didn’t give any type of pre workout to

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The explanatory variable is weather or not the person exercising took any sort of pre workout

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The people that come into the gym and exersice.

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I randomized the pre workout by giving it out to whoever came into the gym within a certain time, no matter who it was. But the lurking variable was the possibility of the people receiving the powder could have a healthier diet or could have illnesses that the other group does or does not have.

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I measured how the participants felt after the day of no pre workout for any group on the first day I was at the gym. I did not have a placebo.

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Our participants will be blind to the observation because they won’t know what kind of pre workout they are taking or what the nutrition facts are.

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About a total of 100 people came in the 2 hours I was at the gym the first day. So our sample size for each group is pretty equal and a good amount of people to run this test with.

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This analysis could be replicated in the future and could be more accurate if there were more people involved, and if their diets were controlled.

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I recorded the data on the last day of being at the gym and the group I gave the pre workout to, reportedly felt better after their workout and felt they recovered faster.

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Surprisingly every single person that came back to the gym and used the pre workout prior felt a difference for the better.

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The only cost was the powdered pre workout and in total all the little packages of samples cost $15

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In conclusion, my prediction on people taking pre workout before exercising would benefit them, was correct.