The Sync

30 March 2026

Relational capacity

Longevity isn’t a solo sport. Your ability to build trust, connect under pressure, repair, and show up for the people around you is one of the most powerful predictors of how long and how well you’ll live. The Sync is the trial no other fitness competition has ever included, and the one that might matter most.

THE SCIENCE

A meta-analysis of 148 studies covering over 300,000 participants, published in PLoS Medicine, found that people with stronger social relationships had a 50% greater likelihood of survival, an effect comparable to quitting smoking and larger than the mortality risk of obesity. A follow-up analysis of 3.4 million people confirmed that social isolation increases mortality risk by 26-32%. And research from UNC’s Positive Emotions and Psychophysiology Lab found that the emotional quality of interactions with strangers and acquaintances is independently associated with lower loneliness and greater mental health. Relational capacity isn’t a soft skill. It’s a longevity marker with harder data behind it than most things you’d find in a supplement aisle.

The Trial

After testing your aerobic capacity, you’ll move into our relational skills test where you’ll read and respond to a series of images of facial and emotional expressions. Your score is based on accuracy and response time across increasing levels of complexity.

HOW TO TRAIN

Strengthen the relationships you already have. Regular contact matters, even a text, even a meme in a group chat. Go deeper with the people closest to you: ask real questions, share something honest, practice the kind of vulnerability that actually builds closeness. And push past the familiar. Strike up a conversation with a stranger. Sit with someone new. The research suggests that these brief, genuine interactions build the kind of trust that compounds over time.