The better sleep and more dreams. Better recovery. Pain in my back the first 10 days of use. Something was going on back there and I just let it take its course. The next 8 weeks no pain at all.
In the post-TA world, people need to be careful about what they mean when they say “at his/her age” because I have many examples of athletes getting stronger and faster in their 5th, 6th, 7th, and 8th decades of life.