Chris Hemsworth swears by something called Foundation Training to keep back injuries at bay—here's how to master one of its core movements

Man in sportswear stretches his arms forward.

I've interviewed a lot of celebrity trainers who know how to build A-list physiques. The problem is often that they use demanding techniques that people with less training experience and limited time to exercise may find challenging to follow.

My recent conversation with Chris Hemsworth's long-time trainer and friend Luke Zocchi was different. Zocchi told me how their training had changed as they got older, making smart, age-appropriate decisions around rest and intensity.