A study recently published in cell.com shows that High-intensity interval training (HIIT) is more effective than weight training or cardio for improving metabolic health, is superior for fighting age related decline, and may yield anti-aging benefits down to the cellular level.
Read the article here: https://alivebynature.com/high-intensity-interval-training-may-reverse-aging/
How to do it?
Wikipedia article about HIIT: https://en.wikipedia.org/wiki/High-intensity_interval_training