Is There a Way to Slow Down the Ageing Process?

Would you be in like, an injection or some kind of monthly treatment regiment if it would turn you back into a 20 year old? I mean, i think i probably would. In theory, i wouldn't because, you know, now, i'm willing to accept that the limitations that nature places on our lives are what give them meaning. But then also, this is what i think you could really talk about, is like, imagine how good music would become if musicians could live for hundreds and hundreds of years? And no, no, please, don't give me that inhaler that makes me become 20 again. Please.