Your daily AI-assisted longevity operating system.

Forty-five minutes of singles tennis — intermittent sprints, lateral movement and rotational power. Racket-sport participation is associated with lower all-cause mortality in long-term cohorts.

An hour of bouldering alternating at-limit and sub-limit problems — grip strength, full-body coordination and time-under-tension work without a barbell.

The urine albumin-to-creatinine ratio detects kidney protein leak years before eGFR drops — the earliest available marker of diabetic and hypertensive kidney injury, from a single spot urine sample.

Progesterone rises after ovulation. A mid-luteal draw above 10 ng/mL confirms it happened; below that points to anovulation or a luteal-phase defect. The cycle day of the draw decides whether the number means anything.

Thirty minutes of brisk walking on rolling terrain with a 10 kg weighted vest — Zone 2 aerobic effort plus mechanical bone-loading, no barbell required.

Selenium cofactors thyroid T4→T3 conversion and glutathione synthesis. Soil-driven deficiency is common. Two Brazil nuts a day covers the daily requirement for most adults.

IGF-1 mediates growth hormone action — too low tracks with frailty; too high associates with cancer risk in cohort data. The optimal range is narrow and age-dependent.

Eat one meal per day without screens — phone face-down, attention on flavour, texture, and company. Slower eating improves satiety; the attentional rest carries into the afternoon.

200 ml plain kefir with half a banana — 200 kcal, 10 g protein, and at least 10⁹ live cultures. Probiotics paired with prebiotic fibre in a two-ingredient, zero-prep snack.

Two hard-boiled eggs with two rye crispbreads — 230 kcal, 16 g protein, and ~250 mg choline. A portable prep-ahead snack with steady protein-plus-complex-carb energy.

An eight-week structured self-trial of an NAD+ precursor with objective sleep and HRV tracking. Animal evidence is strong; human RCT data is mixed. Treat subjective effects with caution — placebo is large.

Build cold-shower tolerance in 30-second weekly increments over four weeks. A low-barrier daily entry to cold exposure — cheaper than a plunge tub, sustainable as a permanent shower habit.