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Testosterone Is a Billion-Dollar Industry, and It Might Not Be Safe

Say you're a dude, and you've always loved muscles and jumping, and then you hit 40 and your muscles just aren't as jumpy as they used to be and your jumps aren't as muscly and also your penis seems to have stopped listening to you and begun forging its own path, and you just kind of want to take a nap at what used to…