I already consider my lifespan predetermined so pretty much no change lol. So long as I can have fun with my friends, and I bring more smiles than frowns to others' faces, I'll be happy with my life. That's all that really matters in the end.
I've never tried any of them....but I don't think I need them anyway (I already have a hard time getting rid of my personal energy, I don't need extra ) plus they don't seem that healthy and I'm pretty sure they'd mess with my sleep......