After a while of your heart racing does it eventually slow down say after a half hour or hour? The detox centers are not educated and do not understand tapering of Benzodiazepines like Ativan or others. In fact, by cutting off cold turkey that can harm a patient. They must be tapered very slowly in slow amounts over sometimes years. If a person gets cut off for a period of time then when they reinstate the original antianxiety medication it has a paradoxical effect depending on the window of abstinence in being cut off. What doctors do sometimes is reinstate the medicine in small increments daily to get it to work again at the original dose. Again, I am not telling you to do that. I'm just offering information that I have learned from credible sources like Dr. Josef Witt Doerring and is numerous podcasts on YouTube with patients and other experts.