Testosterone is the main hormone associated with muscle mass, strength gains, and libido. But that’s far from the only thing it does in the body. As Chris Lockwood, Ph.D., explains in the article “All About Testosterone,” it impacts everything from mood and memory to bone health—but yes, to be clear, it also makes muscles bigger and stronger, and helps increase endurance and athletic performance.
So what do you do if you want more of it? If you’ve watched, read about, or listened to a sporting event in the last few years, you know that there are plenty of companies dying to sell you a supplement that promises to boost your natural production of testosterone.