When it comes to injury recovery and performance enhancement, few topics stir as much interest—and controversy—as BPC-157 and TB-500. Branded by enthusiasts as “healing peptides,” these compounds are increasingly discussed in athletic, rehabilitation, and biohacking circles.

But do they really work? How are they dosed? And most importantly—are they safe and legal?

This article takes a science-based look at both peptides, cutting through the hype to explore what the research actually says, who might benefit, and where the risks lie.

Dartmouth local Cathy Campos, living with MS and awaiting knee replacement surgery, transformed her strength and confidence in just six sessions at Poseidon Performance—progressing from lifting a 12 kg kettlebell to 45 kg on the trap-bar while improving posture, energy, and whole-body stability.

Still feeling tight no matter how much you stretch?

You’re not alone—and the problem likely isn’t flexibility. Most muscle tightness is your nervous system protecting an underprepared area, not a sign you need more stretching.

In this blog, we break down why tightness is a sensation, not a diagnosis—and why strength, control, and load-specific training are the real long-term fix.

We don’t use weight machines at Poseidon — because they don’t build real strength. Machines follow fixed paths designed for the average person. We coach movement that’s tailored to you — building strength, stability, and resilience that lasts.

Struggling with fatigue, stubborn weight, or rising blood sugar despite staying active? The missing piece might be muscle. At Poseidon Performance in Dartmouth, we help adults over 45 reverse metabolic dysfunction through smart, evidence-based strength training. Discover why building strength—not chasing cardio—is the key to long-term health, energy, and resilience.

Bone loss affects nearly half of women over 50—but it doesn’t have to be inevitable. Strength training just 2–3 times per week can cut your fracture risk in half and help preserve independence, mobility, and confidence well into your 70s and beyond. Here’s how to futureproof your body, starting now.

A groundbreaking 2025 review has confirmed what many strength coaches already suspected: resistance training during pregnancy is not only safe—it’s incredibly beneficial. From reducing pain and fatigue to lowering the risk of reproductive complications, strength training is proving to be one of the most powerful tools for a healthier pregnancy.

Reformer Pilates isn’t enough—here’s why healthy, injury-free adults should look elsewhere if they’re training for real strength, resilience, and long-term independence.

Tendon rehab isn’t about rest — it’s about smart, progressive loading. This blog breaks down the most common tendon issues, evidence-based rehab strategies, and why passive treatments alone often fail. If you’ve been stuck with stubborn tendon pain, this is your roadmap to recovery.

Exercise during and after cancer treatment isn’t just safe—it’s powerful. Discover how a structured rehab and movement plan can rebuild strength, manage side effects, and restore confidence in your body.

Pilates is fantastic for core control, posture, and mobility — but when it comes to preserving and building lean muscle as you age, it’s not quite enough. This blog breaks down the role of Pilates in a strength-focused routine and explains why lifting should be part of the picture for healthy ageing.

Think you have sciatica? Think again.

“Sciatica” isn’t a diagnosis—it’s a vague label for nerve-related pain that can come from a range of causes. In this blog, we break down what’s really going on when you feel pain down the leg, why stretching and guesswork won’t solve it, and how targeted rehab can get you lasting relief.

Trigger points are one of the most widely accepted explanations for muscle pain — but are they real, or just a leftover idea from outdated theories? Despite decades of use, there’s no anatomical evidence for trigger points in cadavers, and diagnosis is highly unreliable. This blog cuts through the hype and explores what actually works: load, movement, education, and calming the nervous system.