I got into the habit of taking a mild dose of stimulants (green tea extract, guarana extract, yohombine, etc) about 30 minutes before working out.
I believe my workout density improved as a result.
Are there any drawbacks to taking stimulants before working out on a regular basis?
I read somewhere that continued use of stimulants burns out your endocrine system, or something along those lines.
Is that true?