Longevity & Supplement Guides

Recovery 5 min read

HRV is a personal readout of how your nervous system is coping — valuable as a trend, misleading...

Training 5 min read

Ten thousand steps was a slogan, not a threshold. What the evidence really shows about steps, pace, and...

Training 5 min read

Muscle leaks quietly from midlife — and it's the organ of independence. Why resistance training works at any...

Training 5 min read

VO₂ max is the size of your aerobic engine — and among the strongest, most improvable predictors of...

Training 5 min read

HIIT is hard intervals repeated; REHIT is the minimal-dose version — two ~20-second all-out sprints in a ten-minute...

Training 5 min read

Zone 2 is conversational-pace aerobic work — dull to watch, quietly foundational. What it is, why it tracks...

Sleep 9 min read

Air conditioning built modern Singapore. The same physics runs your night. Why your core has to cool to...

Product updates 4 min read

Two additions to the Agen app: a 30-second camera-based wellness scan that reads your everyday signals, and 60+...

Buying guide 5 min read

An honest framework for comparing all-in-one greens powders and personalized supplement systems — what to look for, and...

Goal guide 5 min read

Which nutrients have authorized roles in normal immune function, how to use them year-round, and why 'boosting' immunity...

Goal guide 5 min read

Which nutrients have established roles in normal cognitive function, what to be skeptical of, and how to build...

Ingredient guide 5 min read

Ashwagandha is a popular adaptogenic herb. Here's an honest look at its traditional use, the state of the...

Language