Explore Capsules

Fitness beyond the scale means measuring progress by strength, cardiovascular health, injury resistance, and consistency in real life. Readers learn how to build capacity gradually, tailor training to their own body and circumstances, and judge fitness claims with a clear eye for where the evidence is strong or limited.

Salt and health guidelines depend on how sodium intake is measured, how individual biology affects salt sensitivity, and how population policies translate evidence into recommendations. Readers will understand the main sources of disagreement behind sodium targets, including measurement uncertainty, genetic variation, and the record of public health interventions.