Healthspan is behavioral, not pharmacological. The 2026 stack is sleep plus cardio plus resistance plus protein plus cardiometabolic management. Everything else amplifies margins, not substance. The supplement industry sells the inverse, because basics are uncopyable and unmarketable. The literature is not ambiguous: the levers with the largest effect sizes cost very little and require boring consistency.
The Tier 1 prescription, in a paragraph: 3 to 4 Zone-2 sessions plus 1 to 2 VO2-max sessions per week (Mandsager 2018, n=122,007, found each 1-MET of cardiorespiratory fitness associated with roughly 11% lower all-cause mortality); 2 to 3 full-body resistance sessions per week, 30 to 45 minutes each; protein at 1.6 to 2.2 g/kg/day across 3 to 4 meals (Morton 2018 meta plateau); 7 to 9 hours of sleep on consistent timing in a 16 to 19°C bedroom; cardiometabolic targets of ApoB <80 mg/dL, blood pressure <130/80, HbA1c <5.6%, fasting insulin <8.
Tier 2 is sauna 3 to 4 sessions per week if accessible, plus deliberate cold exposure if you respond to it. Tier 3 (rapamycin off-label, GLP-1 agonists for non-obese aging, NAD precursors, senolytics) is for people who already nailed Tier 1 and want to chase a smaller residual margin.
The order matters because the gap between someone in the bottom quartile of cardiorespiratory fitness and someone in the third quartile is larger than every supplement effect size in the literature combined. Tier 3 cannot rescue Tier 1 failure. People paying $300/month for novel longevity products while skipping resistance training have a sequencing problem, not a budget problem.
- Cardio: VO2 max in the 75th to 90th percentile for your age and sex. For a 40-year-old man, that is roughly 42 to 48 ml/kg/min.
- Resistance: 2 to 3 full-body sessions per week, around 10 working sets per major muscle group across the week.
- Protein: 1.6 g/kg if active and healthy. 2.0 to 2.2 g/kg if cutting, over 60, or on a GLP-1.
- Sleep: Duration matters, but timing variability is an independent cardiometabolic risk factor. Same wake time, weekday and weekend.
- Cardiometabolic: Most adults over 40 will eventually need a statin or ezetimibe to hit the ApoB target with lifestyle alone. Plan for it.
What to actually do
- Test your cardiorespiratory fitness. Cooper 12-minute, Rockport 1-mile, or a lab VO2 max. If you are below the 50th percentile for your age and sex, that is your priority for the next 6 months.
- Lock the resistance + protein floor. Two non-negotiable 30-minute strength sessions per week, plus 1.6 g/kg of protein every day. This protects lean mass against everything that comes later, including age, deficits, and GLP-1 pharmacology.
- Run a full lipid + metabolic panel. ApoB, fasting insulin, HbA1c, blood pressure. Anything off-target is a 12-week project before you spend a dollar on Tier 3.
The Tier 1 levers are unsexy and uncopyable. That is exactly why they work. Add Tier 2 when Tier 1 is durable, and treat Tier 3 as the search for a few extra percentage points after the structural work is done. For the full evidence-ranked breakdown, see the full article.