125-250 mg/week of test will fix that right up. Add some HGH as necessary. And you can afford the good guys too.
Start with the Anti-Aging Group in Florida. They're all top-notch endocrinologists who can dial your hormones to perfect levels. Then after a couple of years, switch to a local service because you'll know how you respond and have a stack of good bloodwork.
You'll have no idea that 50 can feel that good. The only problem is you'll try to bang your wife too much, which she may or may not like.