re: I'm slowing down. I'm tired all the time. What are you old baws taking to keep going?

Like others said. Get your testosterone checked. If you are under 450, you should get injections. Oral T , creams and gels don't work.
Get up at 5 and go lift 4-5 times a week.
I'm about to turn 50 and I feel damn good.

If you are not sleeping....ambien helps. Trazadone helps lots of people, but it makes me feel like a zombie.
Try to find a provider who actually gives a shite and will work with you.

But seriously, get up at 5 and go lift some weights.