2840: Breakthrough Muscle Building Peptides with Jay Campbell
Apr 20, 2026
Jay Campbell is BACK… and this time he’s talking about all the cutting edge peptides for building muscle. We’re talking follistatin derivatives with 19 day half lives, super retatrutide that you might only need to inject once every TWO MONTHS, and why these compounds could be the future of building lean mass without the brutal side effects.
Jay tells stories about the legendary Dan Duchaine. You’ll learn the REAL history of cyclical ketogenic dieting, why going zero carb all week then carb loading on weekends was revolutionary for bodybuilders in the 90s.
Here’s where it gets controversial… Jay explains why aromatase inhibitors are absolutely DESTROYING modern bodybuilding physiques.
SPONSORS
Huel — huel.com/mindpump
MP Hormones — mphormones.com
MAPS PPL — mapsppl.com
KEY TOPICS
• Cyclical ketogenic dieting protocol: zero carb Monday through Friday, depletion workout Saturday morning, then unlimited carbs until Sunday night
• Long term ketogenic dieting can retard insulin metabolism and increase A1C levels even without eating carbs
• Aromatase inhibitors prevent bodybuilders from achieving true shredded condition by blocking fat loss below 7 to 8% body fat
• Estrogen ratio to testosterone matters more than absolute estrogen levels for men on TRT
• New follistatin derivative FLGR has a 19 day half life and binds only to non organ sensitive androgen receptors
• Super retatrutide may only require injection once every two months due to extended efficacy
• Dan Duchaine pioneered the ephedra caffeine aspirin stack and introduced carb cycling to bodybuilding
• High dose insulin combined with carbohydrate manipulation was the real secret of 90s mass monster physiques
TIMESTAMPS
0:24 Jay Campbell
1:42 Dan Duchaine
5:21 The cyclical ketogenic diet
6:26 crash test dummy research
7:52 long term keto
9:21 carb loading protocol
11:54 Insulin resistance symptoms
14:26 Why AIs are destroying physiques
18:58 New follistatin FLGR peptide
27:15 Recovery Stack
32:46 Bio Regulators and Prostate Peptides
35:33 Legal Gray Area
39:48 Company Operations Explained
40:38 New Hair and Face Launch
41:41 GLP Patent Crackdown
44:07 Small Molecules
45:29 Microdosing GLP Side Effects
48:40 Antitrust and Innovation Fears
51:09 Bodybuilding
52:50 Klotho Anti Aging Breakdown
59:42 Cerebrolysin Brain Benefits
01:07:13 Jail Story
01:16:11 Product Timeline
PEOPLE MENTIONED
Jay Campbell — Guest and peptide expert who specializes in cutting edge hormone optimization
Dan Duchaine — Legendary bodybuilding guru who wrote The Underground Steroid Handbook and pioneered the ECA stack and carb cycling
Mauro DiPasquale — Doctor who wrote The Anabolic Diet book and was instrumental in low carb bodybuilding research
Lyle McDonald — Author of the cyclical ketogenic diet book who Jay describes as brilliant but crazy
Hans Hobstock — Bodybuilder who appeared on the cover of Dan Duchaine’s Body Opus book and trained at Jay’s gym
Ben Pakulski — Professional bodybuilder who described aromatase inhibitors as the worst drugs he ever took
Charles Poliquin — Strength coach referenced for his quote about earning your carbs through training
Paul Saladino — Carnivore diet advocate who changed his position to include honey and fruit
