It's something every driven man eventually goes through:

"Where the hell did all of my energy go?"

You're still in the gym, but the results aren't what they used to be.

By now, you've learned that testosterone is the likely culprit.

You've started to optimize for it....better sleep, better diet, cold showers....a lot of work for so-so results.

"Is age catching up with me?!"

You've heard of testosterone therapy, and perhaps even considered it, but you're not ready for that yet. Besides...

 Why replace what you can restore?