A longevity running plan for the decades, not the week

Is running good exercise for longevity?

The research points that way, though it shows association, not cause: people who run tend to live longer than people who don't. In a cohort of 55,137 adults followed for an average of 15 years, runners had a 30 % lower adjusted risk of death from all causes than non-runners, and the lower risk was seen even among people running less than 51 minutes a week (Lee et al., 2014). A meta-analysis pooling 232,149 people found running associated with a 27 % lower risk of all-cause mortality, with no clear sign that more running brought more benefit (Pedisic et al., 2020).

Fitness follows the same pattern. Among 122,007 adults who had treadmill testing, higher cardiorespiratory fitness was associated with lower long-term mortality (Mandsager et al., 2018). These are associations from observational data. They can't show that running, or any app, adds years to a particular life.

How do zone 2, VO2 max, HRV and sleep fit into one week?

Zone 2 is your Easy gear, the base of nearly every run (see the zone 2 running app). VO2 max is trained by a little Hard work, in intervals (see VO2 max training). Heart rate variability (HRV, the small beat-to-beat changes in your heart rhythm) and sleep are signals: they don't make you fitter, but they say what today can take. Consistency sits under all of it. Most of what successful endurance athletes do is easy, with a smaller share of hard work on top (Seiler, 2010).

Why is exercise for longevity so hard to keep up?

Because the long game breaks in small ways.

• Easy days drift into medium days. Too hard to build the base, too easy to count as hard work.
• Hard days land on bad nights. The session goes badly and the next few days pay for it.
• A missed week becomes a missed month. Plans that pile up missed runs make stopping feel easier than starting again.
• Day streaks punish rest. Rest days are training, and a streak that breaks on them teaches the wrong habit.

What's in a Gears longevity running plan?

Three things: mostly easy running, today's effort read from your body, and load set against your own usual.

1. Mostly easy, a little hard

Plain rules: mostly easy running, at most two hard runs a week and never back to back, and a lighter week every fourth week. You don't need a race: the Get fitter goal is “Fitter and stronger. No race needed.” More on the personalized running plan.

2. Today's effort, read from your body

Each morning Gears reads your sleep, resting heart rate and HRV from Apple Health, each against your own last four weeks, and gives the day a gear. After a short night or a low-HRV morning, the hard run waits. It's guidance for today's run, not a health verdict. More on the running readiness score.

3. Load against your own usual

The training load card draws your recent training against your own usual, from the heart rate of every workout in any app: Easing off, Productive, Pushing, Too much or Recovering. It's “a guide to getting the most from training, not a medical reading.” More on training load.

How do I stay consistent with running?

Count weeks, not days. Your Gears streak is weeks in a row with your runs-a-week goal met, “because rest days are training”, and runs from other apps count toward it. Miss a run and there's nothing to make up: “Tuesday's run didn't happen. Nothing to make up: your plan carries on.” And seven minutes is a real workout, so a busy day can still be a running day.

What does an easy day sound like?

What Gears doesn't do

• It makes no lifespan claims. Nothing here, or in the app, promises years.
• It doesn't score your health or estimate an age for your body. Readiness and load are guidance for today's run.
• It doesn't do strength training. Its plans are running only.
• It doesn't replace your doctor. Read the health disclaimer.

Read next: Running for longevity: what the research says and Should I run today? Sleep, HRV and readiness.