I only do the 30's, not the 37.5's ... It does its job really well, and makes me an animal on the court. <!--emo&**--><img src="http://musclechemistry.mantisforums.com/iB_html/non-cgi/emoticons/devil.gif" border="0" valign="absmiddle" alt='**'><!--endemo-->
Never felt the kind of speedy that you are talking about though. Although, my adrenals are probably fried from excessive N-Y-C stacks. LOL.