I tried contrast training and it might be the fastest way to build strength and power at the same time

Build strength, power and a leaner physique in the same workout ...

Yes, You Can Build ‘Mirror Muscles’ and Still Train for Longevity. Here's How.

Some people online claim working out for aesthetic goals and training "mirror muscles" are not optimal for longevity. Here's ...
Runner's World

Can You Build Muscle While Marathon Training?

Strength training for a marathon helps you prevent injury and chase faster miles, but can you actually build muscle in the process? While it’s technically possible to build muscle while running many ...