Dr. Conrad Murray not only has a right to remain silent ... he's exercising it.
Murray was at a 24 Hour Fitness in Las Vegas last night at around 7:00 PM. He worked out for about an hour with a spotter at the ready.
As far as we know, she didn't leave his side to make a phone call.
Dr. Conrad Murray -- Approach the Bench
3/26/2010 8:30 PM PDT BY TMZ STAFF
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