Peptides · Biohacking · Longevity
Juan C.
Zuniga Jr.
Evidence-first peptide and biohacking educator. Research-driven breakdowns of peptides, biohacking and longevity, three new videos a day on Instagram.
GHK-Cu, retatrutide, glutathione and the next wave of longevity science, explained with the studies behind them.
Audience figures approximate, as of October 2026.
Most-watched on Instagram
More on Instagram → · Also on TikTok →
The Peptide Lab
Two ways to work with me 1-on-1.
1-on-1 Coaching: The Peptide Lab
Three months of 1-on-1 coaching with Juan. Together you set your goals, whether that's recovery, body composition, skin or longevity, and work through the research and a plan built around you, with ongoing check-ins and access to The Peptide Lab's private member community.
1-on-1 Strategy Call
A focused 30-minute 1-on-1 video call with Juan. Bring your questions about specific peptides, the research behind them, or your current stack, and leave with clear next steps. A good fit if you want expert answers before committing to a full program.
Research first, every time
Juan C. Zuniga Jr., known online as thezunigas, breaks down peptides and biohacking in short, plain-language videos. Every one starts with the published research: what a compound is, how it works, and what the studies actually found.
His focus areas are peptides like GHK-Cu and retatrutide, antioxidants like glutathione, recovery, sleep and longevity. The goal is simple: give his audience the knowledge to make smarter decisions about their health and performance.
"Peptides deserve real answers, not hype. I show you the research and what it means for you."
Juan C. Zuniga Jr.Articles
- GHK-CuThe most powerful peptide? Why I put GHK-Cu at the top of the listOct 19, 2026
- GHK-CuStop cycling GHK-Cu: why the copper peptide isn't a hormoneOct 16, 2026
- GHK-CuGHK-Cu is insane: three things most people don't know about the copper peptideOct 15, 2026
- Retatrutide3 retatrutide mistakes I see beginners makeOct 15, 2026
- GHK-Cu · HairGHK-Cu and grey hair: what the research actually showsOct 14, 2026
- GlutathioneThe glutathione mistakes I see most, and what the research saysOct 13, 2026
Also a runner
Miles are where I test recovery and endurance in real life.
Running keeps the research honest. Recovery, sleep, inflammation and training load all show up on the road before they show up anywhere else.
Work with me
I partner with brands I'd actually use, from biohacking, recovery and wearables to lab testing, supplements and fitness. Integrations, series and long-term partnerships with an engaged, health-focused audience.