I found those chills to be awful, what I do is get my work-out clothes on & like it or not, I go for a walk & trust me when I say, ITS COLD OUTSIDE! But I do it anyway, as it relieves my anxiety & warms me up, this for me is one of my lifesaving remedys in my methadone detox, laying around is not the best thing for me, so no matter how bad I feel, I get up & start moving, it helps.