The fitness industry has perpetuated myths about this balance for decades. “Cardio kills gains” and “lifting makes you bulky” are outdated falsehoods that have kept too many people from their ideal ...

It doesn’t matter if you run, cycle or swim, gym cardio classes still burn like hell. So, why is gym-based cardio so hard and can we ever look forward to a day when we’re noticeably better at it?

Whenever you walk into a new gym, one space inevitably catches the eye: the main floor, filled with cardio machines of all kinds, rows and rows of ’em. And whether you’re there for a chill ...