IF YOUR MAIN FITNESS goal is to add mass and chisel out your figure, then the thought of building "lean muscle" likely sounds rather appealing. After all, why would you dedicate hours in the gym ...

Approval would upend two decades of failure for myostatin pathway inhibitors, a class of drugs that grows skeletal muscle. Beyond the first regulatory decision for apitegromab, companies are ...

"People are always like, 'Oh, you've got muscles, therefore you must be fit.' I can tell you, for free, they're for decorative purposes at best," an influencer said in a TikTok with nearly 200,000 ...