Back to today’s briefing

Story perspectives

Endurance Training Linked to 'Younger' Immune System

10/18/2025

32 5

Summary

Story summary

Researchers analyzed health data from nine participants and found that those who engaged in endurance training had more adaptable and efficient natural killer cells than untrained individuals.
The study suggests a link between endurance exercise and a “younger” immune system, though it does not prove that it reduces illnesses or extends life.
Experts caution that factors such as sleep, diet, and stress also significantly influence immune health.

1 of 1

Story summary

Researchers analyzed health data from nine participants and found that those who engaged in endurance training had more adaptable and efficient natural killer cells than untrained individuals.
The study suggests a link between endurance exercise and a “younger” immune system, though it does not prove that it reduces illnesses or extends life.
Experts caution that factors such as sleep, diet, and stress also significantly influence immune health.