The relentless strength routine that helped Harry Styles to run a sub-3-hour marathon – and how you can do it

The singer’s training blends high-volume bodyweight work with running and conditioning to build serious fitness ...

Harry Styles Built His Athletic Physique with This Relentless Routine – Featuring a 300-Rep Warm-Up

Running formed the backbone of the routine. Styles would often start sessions with a 20-30 minute run, followed by 100 ...