I’m able to mimic this by flexing my neck really hard, I turn red and if I hold it long enough I pass out and feel intoxicated for a short while after.
I haven’t really done it recently because I’m kind of afraid of having a stroke. I dont think that the sudden increase in blood pressure is a good thing, but I’m not sure how bad it is, until I find something on the subject I probably wont be visiting my subconsciousness.
I almost blacked out after a few sets and i realized its because i’m holding my breath too much in my belly…
pushing against your weight belt= good
holding breathe = bad
[quote]valbert wrote:
Well, it happens especially often on the first rep of a set of front squats. In it’s milder form, my body just feels completely numb.
I don’t think it’s from exerting myself especially hard because it never happens to me on back squats and my head feels like it’s going to explode on those. I generally take a big breath before each rep and then hold it until the rep is complete (valsalva manoeuvre, or however you spell it).
Actually, now that I think about it, I was racking the bar on my shoulders with a clean style grip when I got dizzy doing the overhead presses. So maybe I am cutting off blood flow with the bar.
Thanks to everyone for trying to help me solve this mystery. I especially like the speculations that I’m just super hardcore, although I don’t think it’s true.[/quote]
on average after setting up to sqaut it takes 3-4 seconds and that includes the step back rebalance weight -suck in breath and push against belt now rep -lets say is 2-0-2 well valbert it only takes 9 seconds to choke someone out using a choke with a arm not a smaller diameter bar with more pressure(weight) on it.
I can think of a few things to try (just suggestions - I am not there too see your form)
[quote]Xen Nova wrote:
I almost blacked out after a few sets and i realized its because i’m holding my breath too much in my belly…
pushing against your weight belt= good
holding breathe = bad[/quote]
This is good to know. I frequently feel like I’m blacking out after I rack the weight. You know, light headed and vision going dark. Like a sudden drop in blood pressure. I find this happens more when I go lighter with higher reps vs. heavier fewer reps.
A couple weeks ago I came within a hairsbreadth of barfing in the rack after a set. I spent some quality time in the bathroom with my head between my knees and a cold cloth on my neck. I kind of like the blacking out feeling but could live without vomiting.
have your sugar checked also. I am a diabetic type 2 and have the same problem. Hope it’s just not breathing correctly, as I wouldn’t want anyone to get this diabetes crap.
[quote]cheeta wrote:
masonator wrote:
cheeta wrote: my self i am aiming for a nose bleed before the end of this year whyle deadlifting or squatting …now that be awesome…
Wow. The world NEEDS more women like you
Well at least you guys got me and Buckeye girl 
[/quote]
i’m pretty sure almost fainting and throwing weights around isn’t LOL.
Valbert, I am 6’5" tall and have always had to deal with dizziness whenever I stood up, or gripped hard when working out. Over the uyears I have worked with many companies and professionals to address this specific issue along with several others regarding lifting. You might look at flexsolate’s grip-free lifting cuffs or their Gym In A Bag which both incorporate grip-free lifting. When you grip tightly when lifting, you automatically do exactly what is necessarty to spike your blood pressure. When you release the grip during lifting, it allos you to breateh easier, not work so hard with the mind/muscle connection, AND you will not expericne any dizziness as it allows for the direct isolation of the targeted muscle without gripping. Poeple from Jim Stoppani PhD of exercise physiology who is a writer for Muscle&Fitness Magazine along with many other noted experts in the field have been writing about this for more than four years now. Check it out as you and I are not alone. By the way, the best benefit in using the cuffs is that they provide between 2 to 4 times the benefit of each exercise and that has been tested and proven scientifically. I hope thios helps to solve your problem and please get back to me if you have any questions. Warmest Regards, Jerry
I get the dizziness on repeated sets of clean and press @ 85% of max or above where I hold my breath all the way to lockout. It can be avoided simply by letting out some of the breath as I near the top of the movement.
I also get this phenomenon when I’m close to or in “over-training” (a.k.a under-recovery) wherein simply standing up too fast can make me dizzy. It’s a classic sign that reducing the workload would be a good idea.