Cardio Kills Gains? What 43 Studies Tell Us About Lifting and Running

You've heard it a thousand times in the gym: "Cardio kills gains." Maybe you've even lived it — skipping that morning run because you're terrified it'll sabotage your squat progress. But what if I told you that 43+ studies reveal a completely different story? The fitness industry has been misinterpreting research for decades, turning nuanced scientific findings into oversimplified rules. Today, we're diving into what the research actually says about doing both cardio and strength training — and why the interference effect might be the most misunderstood concept in fitness.