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You may have overdone it. I know the folks at MWOD say 2min minimum, and sometimes even as much as 10 min depending on the situation. But in my experience, going even 2min can be too long. The problem I think is knowing how much pressure to really use, and when to stop. The word “smash” that we use unfortunately brings the connotation that we should be literally crushing our muscles which i think is wrong. Causing trauma to our muscles, and especially when they have already been beat up by a workout(s) is not a good idea.