do not have the tremor because you're not activating movement and the brakes are sort of turned on in terms of the tremor. but when he wakes up it immediately comes back. he has to put on special shoes, the whole thing. >> he's incredibly strong. the full report is on with sanjay tomorrow. can you see it tomorrow night, dr. sanjay gupta reports, "a conversation with michael j. fox," 8:00 p.m. eastern here on cnn. up next, sick of high electricity bills? we'll show you one simple thing you can do to go green and have an energy-saving home. one that will save you a lot of money in the long run. how can yf without taking pills around the clock? try thermacare heatwraps, for all day relief without pills. i was surprised, thermacare worked all day. you feel the heat. and it relaxes and unlocks the muscle. you've got to try it. [ man ] thermacare, more effective for back pain than the maximum dose of acetaminophen, the medicine in tylenol. go to thermacare.com today for a $3 off coupon. thermacare.