VO2max (your ability to take in, and use oxygen, aka: cardio) is the #1 predictor of your risk of all cause mortality.

A higher #VO2max has a greater impact on #health than smoking does in the inverse direction.

A combo of Long, steady sessions (zone 2), and relatively short, but intense intervals is the simplest way to improve VO2max, thus making you harder to kill and improving #longevity.

There’s not a single other intervention available today that has a greater impact than VO2max, get your #fitness up folks!