Let’s get one thing straight: Muscle is muscle. Despite what many fitness influencers may have you believe, there’s no such thing as "lean muscle" or "bulk muscle." It’s all made from the same stuff.

In A Nutshell Changing your squat stance and toe angle shifts how muscles work together, not just how hard they fire. Narrow, ...

Medically reviewed by Amy Kwan, PT Key Takeaways Most people have a mix of somatotypes, which reflect muscle and body ...