Peptides are becoming more common—but their value depends on context. A grounded look at evidence gaps, regulation, risk, and real-world use.

Discover the new science behind cardio intensity and how to know if your workouts are “vigorous enough” to improve health, longevity, and performance.

Learn how to train smarter—not just harder. Understand intensity, volume, and specificity to break plateaus, avoid burnout, and maximize results.