How long does it take for pre-workout supplements with caffeine to leave the body?

  • manpit209

    Posts: 213

    Aug 08, 2011 2:56 AM GMT
    I don't really use pre-workout supplements because most have caffeine in it and my body doesn't really like caffeine. I workout in the evenings also and the caffeine affects my sleep. I'm curious to know how long it takes for the body to flush out the caffeine from the pre-workout supplements. What I've been doing is taking l-arginine to help with NO production but it doesn't really produce a pump like the pre-workout supplements. I may just cut this out of my supplements entirely because of the caffeine. Thanks for any feedback.
  • gwuinsf

    Posts: 525

    Aug 08, 2011 5:20 PM GMT
    I think 1MR specifically says not to take 4 hours before going to bed. I work out after work as well, and I don't use 1MR anymore during the week. I head to the gym around 4:30 after work and it still messed up my sleep 6 hours later. I'll use it on the weekend when I can give it more time to work out of my system.
  • manpit209

    Posts: 213

    Aug 09, 2011 6:34 AM GMT
    Pardon my ignorance by what is 1MR? Thanks!
  • gwuinsf

    Posts: 525

    Aug 11, 2011 7:47 PM GMT
    manpit209 saidPardon my ignorance by what is 1MR? Thanks!


    http://www.bodybuilding.com/store/bpisports/1-m-r.html
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    Aug 11, 2011 8:06 PM GMT
    gwuinsf saidI think 1MR specifically says not to take 4 hours before going to bed. I work out after work as well, and I don't use 1MR anymore during the week. I head to the gym around 4:30 after work and it still messed up my sleep 6 hours later. I'll use it on the weekend when I can give it more time to work out of my system.


    I agree, 4 hours is about how long I'll feel something after taking Jack3d
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    Aug 11, 2011 8:10 PM GMT
    You could try Yok3d. It is the arginine without caffeine.
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    Aug 11, 2011 8:18 PM GMT
    If I work out later than 9:00pm and take 1mr or Jack I'm not sleeping 'till at least 2-3am. I think it affects everyone a little differently.
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    Aug 11, 2011 8:18 PM GMT
    hazardous said
    gwuinsf saidI think 1MR specifically says not to take 4 hours before going to bed. I work out after work as well, and I don't use 1MR anymore during the week. I head to the gym around 4:30 after work and it still messed up my sleep 6 hours later. I'll use it on the weekend when I can give it more time to work out of my system.


    I agree, 4 hours is about how long I'll feel something after taking Jack3d


    Sounds about right, though I haven't used Jack3d for over a month (haven't gotten around to it although my workouts haven't been as focused and energetic as a result). Sometimes I have coffee 9 hours before sleep and I regret it each time because it disturbs my sleep. I assume that Jack3d still has a caffeine effect for much longer than the stimulus felt during gym workout, possibly similar to coffee.
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    Aug 12, 2011 3:05 AM GMT
    I take Jack3D occasionally early in the morning and it can keep me flying 12 hours later. Experiment on weekends when a good night's sleep is not essential. Everyone responds differently.
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    Aug 12, 2011 11:44 PM GMT
    The half life of caffeine in a healthy adult is 5 hours... in 5 hours 50% of the caffeine will be gone...