I would like to know why when I take a supplement called Ma Hueng, does it not affect me like it does other people? My friends will take the same supplement and be "on edge" for hours. I could take the same dosage and be able to go to sleep. We weigh about the same. Do you have any answers for me? Thank you very much.
It really depends on the genetic make-up of the individual. It has less to do with age or body size.