2951: Slow Reps vs. Fast Reps — What the Data Actually Says (The Answer Has Nuance)
Release Date: 09/23/2026
Mind Pump: Raw Fitness Truth
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My Maps Program: $297 for a fully customized MAPS program. Answer 20 questions, get a program built for your specific goals and equipment, plus a 1-on-1 call with a trainer to review it. In this episode the guys break down the red flags to watch for when hiring an online fitness coach. They cover why 100+ clients per coach is a massive red flag, why you need to ask specifically how AI is being used (most coaching software now auto-responds to clients with AI without disclosing it), how often you will actually be in contact with a real human, and what the right answer is when you ask a coach...
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MAPS Abs and Butt: https://mapsabsandbutt.com Code: LAUNCH for 40% off. Includes Butt Building Diet Guide, Women's Supplement Guide, at-home dumbbell version and a free second program at checkout (Muscle Mommy or Muscle Mommy 15). In this episode the guys break down five common hypertrophy study findings that do not hold up in the real world — why 15-20 sets per body part per week works in 8-12 week studies but burns out real people within months, why light weight and heavy weight producing the same results ignores how fatigue affects the big compound lifts, why training close to failure...
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MAPS Sale:Code: SCARY40 for 40% off everything sitewide for 3 days only. Also: MAPS Abs and Butt at — Code: LAUNCH for 40% off. In this episode the guys sit down and tell the full origin story of how they each got into fitness and the personal training industry. Sal shares starting at 13 with plastic sand-filled dumbbells, spotting his dad benching 300 pounds, getting his first job at 24 Hour Fitness at 18 with zero certification, and selling $6,000 of personal training on his first day without knowing what it cost. Adam shares falling into fitness accidentally, the moment money sold him on...
info_outlineMind Pump: Raw Fitness Truth
MAPS Abs and Butt: https://mapsabsandbutt.com Code: LAUNCH for 40% off. Includes Butt Building Diet Guide, Women's Supplement Guide, at-home dumbbell version and a free second program at checkout (Muscle Mommy or Muscle Mommy 15). In this episode the guys break down the secrets for training in a calorie deficit — why bodyweight lifts are psychologically and physically the best choice when cutting, what it actually feels like to train depleted and why anticipating it helps you push through, why low reps beat high reps in a deficit because they preserve muscle with far less stress on the body,...
info_outlineMind Pump: Raw Fitness Truth
MAPS Abs and Butt: https://mapsabsandbutt.com Code: LAUNCH for 40% off. Includes Butt Building Diet Guide, Women's Supplement Guide, at-home dumbbell version and a free second program at checkout (Muscle Mommy or Muscle Mommy 15). In this episode the guys break down the best forms of cardio for fat loss, endurance and athleticism. They cover why walking is the best cardio for fat loss, why steady state is best for building endurance, why HIIT develops the kind of explosive stamina that sports actually require, and why playing a sport or just going out and having fun is the most...
info_outlineMAPS Abs and Butt: https://mapsabsandbutt.com
Code: LAUNCH for 40% off. Includes Butt Building Diet Guide, Women's Supplement Guide, at-home dumbbell version and a free second program at checkout (Muscle Mommy or Muscle Mommy 15).
In this episode the guys break down rep speed — slow reps, fast reps and pause reps — and what the data actually says. They cover why saying it doesn't matter for hypertrophy misses the nuance completely, why injury risk alone makes rep speed matter enormously, why slow reps are essential for mind muscle connection and targeted esthetics, when moving fast matters for performance and everyday functionality, and why the novelty effect of switching rep speeds over time likely builds more muscle long term. Adam also shares why he does fasted cardio even though studies say it doesn't matter for fat loss — and why all the behavioral cascades it creates are the real reason it works. They cover the explosive growth of the electrolyte powder market (LMNT went from $7 million in 2020 to $206 million in 2023 and created the category), reading Love and Respect by Dr. Emerson Eggerichs and why respect and love are fundamentally different needs for men and women, the challenges vegans face hitting protein and why Organifi plant protein is the best vegan protein they've used, and the upcoming Mind Pump pickleball tournament. Then they coach live callers submitted through mplivecaller.com.
SPONSORS
LMNT (electrolytes): https://drinklmnt.com/MindPump
Free sample pack with any purchase, no code needed. Deep dive on air — how LMNT created the electrolyte powder category and grew from $7M to $206M in three years.
Organifi (plant protein): https://organifi.com/mindpump
Code: MINDPUMP for 20% off. Best vegan protein any of them have used — well formulated amino acid profile, glyphosate free, low heavy metals, easy to digest and actually tastes good.
LINKS
Submit a live caller question: https://mplivecaller.com
Mind Pump Store: https://mindpumpstore.com
Maps Fitness Products: https://mapsfitnessproducts.com
Instagram: @mindpumpmedia
0:00 - Intro
2:25 - Slow reps vs. fast reps vs. pause reps — what the data actually says
5:48 - Why slow reps are essential for technique, safety and mind muscle connection
9:23 - Injury risk is the biggest reason rep speed matters — and why studies miss this
14:28 - Why you need to train speed too — what happens when you never move fast
21:22 - The novelty effect — why changing rep speeds over time builds more muscle long term
23:24 - Why Adam does fasted cardio even though studies say it doesn't matter
28:10 - LMNT and the electrolyte powder market — from $7M to $206M in three years
36:19 - Furnace Fest and why it's the one thing Justin looks forward to all year
38:03 - Love and Respect — the book Sal is reading with his wife and why it clicked
48:08 - The challenges vegans face hitting protein and why Organifi plant protein is the best
53:02 - Mind Pump pickleball tournament — who is the best on the team
56:24 - AI conspiracy twist — Sal's take on why OpenAI and Anthropic are asking for regulation
1:04:44 - Caller: Matilda (Singapore) — returning caller, period back after one month, now gaining weight on 2700 calories, wants to drop tracking and switch programs
1:12:08 - Caller: Malia (Illinois) — type 1 diabetes, 20,000 steps a day, 1800 calories, DEXA not improving, gets coaching referral
1:26:05 - Caller: Shell (Pennsylvania) — full time RV dweller, wakes at 2am to work, DEXA getting worse every time, sleep is the clear issue
1:42:29 - Caller: Andrew (Washington) — CrossFit background, plant based, 1700 calories, rucking daily, losing lean mass on DEXA, overtrained and underfed