I assert that my boomer exercise regimen is improved when I leverage safe, researched ergogenic nutritional items like caffeine.
There are no nirvana quick fixes – that is for sure.
Trust and verify are key watchwords for all of us.
That stated; I do believe in prudent ingestion of trustworthy BCAAs (from whey sources) and correct creatine doses to improve my wellness and masters athletic performance.
Here is a classic Opinion from Family Practice MDs: http://www.aafp.org/afp/2001/0301/p913.pdf.