As we age the brain increases MAO-B activity, which TLDR destroys dopamine, the "motivation molecule".
There's a theory that this happens to ensure we don't push our old, broken down bodies into doing too much and end up getting hurt or killed.
Selegeline (an old parkinson's drug) inhibits MAO-B from destroying as much dopamine, so motivation, energy, and mood stay the equivalent of what they were earlier in life.
A daily microdose, 5mg has a very good safety profile, and seems to restore vitality that's eroded from aging. Its inventor used it every day for 30+ years.
View attachment 341628
It definitely works, but takes a week or two for full effect. You can get a prescription from anti-aging clinics but it's cheap from India pharma.