Blog.

A definition of aerobic capacity should give context and guide training, especially if the goal is to build true capacity.

The peptide conversation isn't really about peptides—it's about signaling.

You breathe all day, every day—so how good at it are you?

Your brain has a nightly self-cleaning cycle—the glymphatic system—and a new 2026 trial suggests morning bright light may help it run better.

How endotoxins breach your gut and fuel inflammation, and the vitamins, foods, hormones, and habits that build your defense.

The five supplements I trust most after hundreds of health and performance evaluations