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Logarithmic PE Gains


Logarithmic PE Gains

The enclosed file is a chart displaying the average gains over time made by PE’ers on this website. The data was compiled from here: “Size’s PE Data Site.

The vertical axis (numbers across the bottom) represent days of PE. The horizontal axis (numbers up the left side) represent inches of growth.

The blue lines represent BPEL (Bone Pressed Erect Length) gains.

The pink lines represent EG (Erect Girth) gains.

The data was compiled as follows. Every 30 days all members that posted gains will be included in the chart. Some members don’t post their gains regularly, which is why the line sines up and down. Each segment of time begins the day after the last segment. Example: Segment 1 represents PE’ers that posted from day 1 to day 30. Segment 2 represents PE’ers that posted from day 31 to day 60. Etc.

The chart represents 3 years worth of data or 1110 days to be exact.

The spike at around 900 days was caused by one guy named “goodness81” who posted a 3.75” BPEL gain and a 1.4” EG gain. I thought about removing it from the chart but decided it was valid to keep it.

The quantity of members averaged for each 30 day period began at 1286 in the first month, and by 9th month was down to 44 members. The last 10 months on the chart represent averages of under 10 people. Therefore this is not a scientific evaluation, but as close as I could get.

As you can see, most dramatic gains are made within the first 180 days.


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Cool and thank you!!!

Running a Massive Co-Front.

-Still bitter the y2k bug was a dud.

-My dear boy, do you ask a fish how it swims? (No.) Or a bird how it flies? (No.) Of course not. They do it because they were born to do it...

Perhaps if the user’s signature was tied into the DataBase it would be up-to-date.

** Take pictures, don't let the mind play tricks on you ** Then: BPEL ? x ? 2004 Jun 23: BPEL 6.0" x 5.1" BPFSL 6.5" 2004 Sep 16: BPEL 6.1" x 5.1" BPFSL 6.75" 2005 Jan 11: BPEL 6.4" x ?" BPFSL 7.00" - resumed after time off since 04 Oct 31 2005 Mar 08: BPEL ?" x ?" BPFSL 7.25" - the stretch feels completly different now, it seems i have reached a plateu 2005 Aug 25: BPEL ?" x ?" BPFSL 7.25" - resumed after about 3 months brake * I use BPFSL for consistency

Very interesting, but I think I need some more explanation. Does the chart represent average cumulative gains over time?

So, for example, does the first data point represent average gains of all members in the 1st 30s of their respective PE careers, the second point represent average gains in the first 60 days, the third point represent average gains in the first 90 days, etc.

If so, it would be difficult to explain the large spike, unless that poster was the only one to report gains at 900 days.

Enter your measurements in the PE Database.

Modesto, The chart reperesents average gains over time, non cumulative. The first data-point (30 days) represents all members that had a posted change. The second data-point represents changes from 31 days to 60 days. For instance if

member A posts 5” BPEL on 1/1/2001
member A posts 5.25” BPEL on 1/15/2001
member A posts 5.5” BPEL on 3/1/2001

This member would be included in the first data-point showing a .25” gain.
This member would also be included in the third data-point showing a .25” gain. (not his total gain)

member B posts 5” BPEL on 3/1/2001
member B posts 5.5” BPEL on 3/15/2001

This member would also be included in the first data-point showing a .5” gain because it is his respective first 30 days.

The first data-point will now average the two gains (.25”) and (.5”) for a total of: .375”

member C posts 5” BPEL on 5/1/2001
member C posts 5.25” BPEL on 6/15/2001

This member would not be included in the first data-point, but would be included in the second data-point because he posted a second time 45 days after the first post. All other members would be excluded from the second data-point because they didn’t post between 30 and 60 days.

Subsequent data-points begin after the last data-point.

member A will be included in the third data point showing another .25” gain, not showing his entire gain of .5”. This way we can see what period of time doing PE is most effective.

You are correct that only one user posted in the month with the spike and he posted with a substantial gain. It’s too bad he didn’t post earlier with smaller increments, the chart would have been more level, but the result would have been the same.


Next time a newbie comes on here saying “Yo yo yo, I want to make some massive gains wit dis PE shiznat, how much am I gonna gain??”, just tell them “ln(350)/ln(days of PE)” lol

That’s basically why I did it. Basically the average PE’er appears to gain 1 inch in length and a 1/2 inch in girth after one year. That would put me in a good spot, so to speak…


What are the equations for the logarithmic curves? It would be funny to project the curves into the future to see how long on average it would take to gain 7 inches :) .

Stats: 5/9/05 BPL:7.1x5.8

Ultimate Goal: 8.5x6.5 (ideal)

Does it look like if the graph was extended for another 3 years the BPEL line would still be around the 1.5” gain mark? I know extrapolation of data is dodgy but the graph looked to be on a fairly clear trend. Should we give up when we get around 1.5” gain because that’s all that we are going to get?

Feb 2004 BPEL 6.7" NBPEL ???? BPFSL ???? EG 5.65" Feb 2005 BPEL 7.1" NBPEL 5.8" BPFSL 6.9" EG 5.8" Feb 2006 BPEL 7.3" NBPEL 5.8" BPFSL 7.6" EG 5.85" Feb 2007 BPEL 7.3" NBPEL 5.8" BPFSL 7.5" EG 5.9"

Many people have had gains past 1.5”, probably because they tried. I’m guessing a great number of people just quit once they were satisfied with the results. There is data beyond 3 years but the data is very thin at that point, the chart would be skewed.

Obviously it would be impossible to continue the chart without actual data, but it appears to be still climbing even after 3 years. I don’t know how long one can continue to grow using PE.


As you pointed out the first 180 days show the greatest rates of growth. After the initial 180 days the gain/time relationship is not far off being linear.
Perhaps a major factor in the early gains is that people will be getting better at squeezing the last fraction out of their measuring. After a few months it is no longer possible to to get any better at measuring and so the real gains start to be measured after that. Looking at the graph after the first 180 days it looks like 0.5” per annum would be a rough figure for its gradient. This would seem to me a reasonable rate to really grow a body part.

Thanks for the info

Feb 2004 BPEL 6.7" NBPEL ???? BPFSL ???? EG 5.65" Feb 2005 BPEL 7.1" NBPEL 5.8" BPFSL 6.9" EG 5.8" Feb 2006 BPEL 7.3" NBPEL 5.8" BPFSL 7.6" EG 5.85" Feb 2007 BPEL 7.3" NBPEL 5.8" BPFSL 7.5" EG 5.9"


Thank you for your analysis. Your data is certainly consistent with the hypothesis that gains are easiest in the beginning and possibly complement the extended break for newbie gains philosophy.

I look forward to your future posts.

mbuc, I agree, the chart is nearly linear after the first six months. It amazes me actually. Another point you made was that people could have been measuring better. I found that my measurements were much higher just after PE, and so if I had posted then, I would have posted a gain in the first week. Obviously no real gain can be made in the first week. And I think it was likely that happened a lot. Everybody posted their first measurement before they knew what PE was exactly, then they realized that PE gave them a temporary gain and started measuring after PE - bragging rights.

Penismith, I’m not sure how the chart could complement extended breaks. Please explain.


I agree. I appreciate your efforts wangchung, please continue if you desire. The idea that fast gains occur because of measurement error has been proposed a few times. It seems like a reasonable theory to me, though I don’t think its been extensively discussed.

-Still bitter the y2k bug was a dud.

-My dear boy, do you ask a fish how it swims? (No.) Or a bird how it flies? (No.) Of course not. They do it because they were born to do it...

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