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Here’s what people are reacting to: a wave of new coverage highlighting VO₂ max as one of the strongest predictors of longevity, with cardiologists calling it a “vital sign” that deserves more attention than cholesterol alone. The takeaway circulating online is simple: if you want to live longer, improve your aerobic fitness.

As our ResetRx advisor, Dr. Jacob Kelly, explains:

“Cardiovascular fitness predicts longevity and how long someone will live with better accuracy than almost any other metric. The VO₂ max is like a credit score for your heart and mitochondria.” Read more on Dr. Kelly's substack

With this weekend's severe winter storm, many of us were hunkered indoors.

When that happens, something predictable shows up. It’s not that people stop caring about their health. It’s that movement, sleep, and daily rhythm quietly change when everything shifts indoors. Not dramatically. Just enough to matter.

Winter doesn’t usually break routines all at once. It removes the defaults. The walk that used to happen without thinking. The natural transition from day to evening. The subtle cues that kept bedtime from drifting later. When those disappear, health doesn’t collapse overnight. It drifts.

And drift is dangerous because it feels harmless.

When people think about living longer, they usually think about genetics, supplements, or medical advances. But the truth is far simpler and more empowering. How you live your life every day has a greater impact on your healthspan than your DNA. Research shows that up to 80 percent of chronic disease risk is driven by lifestyle rather than genetics. That means most of your long-term vitality is within your control.