I am a very organized person. I track everything. I have a spreadsheet for my meals. I have a spreadsheet for my sleep. I have a spreadsheet for my spreadsheets. this is just who I am.

I started pumping 3 weeks ago and I need to know: what is the EXACT minimum number of reps for a pump to count?

I'm not asking for a range. I'm not asking for "it depends." I'm not asking for "listen to your body." my body doesn't speak. it doesn't give me numbers. I need a NUMBER. an INTEGER. something I can put in a cell in my spreadsheet and highlight in green.

I have searched this forum for 4 hours. I have found the following answers:

- "at least 8" (from a thread in 2019)
- "12 minimum" (from a thread in 2021)
- "it depends" (from 847 threads spanning 24 years)
- "the pump begins when the pump begins" (from PumpMaster3000, which I'm sure is very wise but is not a number)

PLEASE. just give me the number. I will accept any number as long as everyone agrees on it. (I am beginning to suspect everyone will not agree on it.)

I appreciate the organizational energy here. A spreadsheet for your spreadsheets. That's commitment. I respect it.

The answer is 8.

Wait. No. Let me think about this. Sometimes I get a pump at 6 reps if the weight is heavy enough. But other times 8 doesn't do it if the weight is too light. And there was that one time in 2014 where I got a pump from 3 reps of an absurdly heavy deadlift but I don't think that counts as normal.

Ok. The answer is 8 to 15.

I know. I know that's a range. I know you said no ranges. But the pump doesn't respect spreadsheets. I've been trying to quantify the pump for 22 years and every time I think I have a number, the pump moves the number. The pump is not a fixed point. The pump is a moving target. I'm sorry. I really am.

But if you need ONE number for your spreadsheet — put 12. Twelve is... safe. Twelve is the number I would tell someone if they put a gun to my head and said "give me the minimum rep count or else." I would say 12 and hope for the best.

Finally. FINALLY someone who speaks my language. ExactReps, I have been waiting for this question my entire forum career.

I have spent 3 years collecting data on this. I have a database. 14,000 pump sessions logged by 200+ forum members who agreed to participate in what I call the Pump Threshold Study. Here are the results:

Mean minimum reps for pump onset: 11.7
Median: 12
Mode: 10
Standard deviation: 4.3
Minimum recorded pump onset: 1 rep (outlier — this was VeteranPumper_Gus during what he describes as "a spiritual experience" in 2017)
Maximum recorded pump onset: 47 reps (outlier — this was a user who later admitted they might not have been doing the exercise correctly)

So mathematically, the answer is 11.7 reps. But you can't do 0.7 of a rep. Well, you CAN, but the data on partial reps is inconclusive and frankly it opened a whole sub-debate that I don't want to get into.

For your spreadsheet: 12. Round up. Always round up when it comes to the pump. The pump rewards rounding up.

EDIT: I just re-ran the numbers excluding outliers and got 11.3. So now I don't know if the answer is 11 or 12. I need to go lie down.

Pete. Buddy. I love you. I love the spreadsheet. I love the 14,000 data points. But you are trying to put the ocean in a cup.

The minimum number of reps for a pump to count is the number of reps at which you feel the pump. That's it. That's the answer. It's not 8. It's not 12. It's not 11.7. It's the rep where something shifts. Where your muscles go from "I am doing an exercise" to "I am being PUMPED." You'll know. Your body DOES speak — you just have to listen.

I've had pumps at 5 reps. I've had pumps at 20 reps. I once got a pump from picking up a bag of groceries but that's a different story and Pete already has that data point in his database under "anomalous pump events."

ExactReps: I know this isn't the answer you want. I know you want a number. But the pump is not a number. The pump is a feeling. And feelings don't fit in spreadsheet cells. (Trust me — I've tried. My therapist says this is "related to larger issues.")

UPDATE:

ok so let me get this straight.

Gus says 12. then 8 to 15. then settles on 12 "if someone put a gun to my head."

Pete — who has a LITERAL DATABASE of 14,000 pump sessions — says 11.7, then re-runs the numbers and gets 11.3, and is now apparently lying down somewhere having a statistical crisis.

Brenda says it's not a number. it's a feeling. feelings don't go in spreadsheets. (they do, Brenda. I have a spreadsheet for feelings. it has conditional formatting.)

so in the span of 2 hours, the "exact number" has been: 8, 12, 8-15, 11.7, 11.3, and "not a number."

I came here for ONE number. I now have MORE numbers than when I started and LESS certainty. this is the opposite of what I wanted. this is the anti-answer. I asked for a point and received a cloud.

I'm putting 12 in the spreadsheet. I'm highlighting it in yellow, not green, because I don't fully trust it. and I'm going to the gym tomorrow to do 12 reps and see what happens. if the pump doesn't arrive at rep 12, I'm coming back to this thread and someone is going to hear about it.

thank you all for nothing and also everything. this forum is chaos.