Hey all-- im new. I was looking for some help- Ive been lifting for years- I don't lift hardcore for mass-- I like to be thin but tone and hard.
I need opinions on Stack or something similar! A few areas if anyone could help!! :

1) - Is this good for a girl to take to get hard but NOT big??
2) - Should I take it even before cardio as well- or just lifting?
3) - Does anyone know of any effects like palpitations etc etc..

Thanks so much!