Hi all , my wife just started training and wants to try a fat burner. My question is which one can she use that won't make her jittery or make her sweat ALL the time, lol...... I have heard of Labrada's Charge and Trim Spa and ECA stack on here but what one would be right for her? She is on a diet and currently training but wants a burst for the weight loss. Thanks a lot.....roy