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“Always warm up to exercising. You can't suddenly jolt a stiff body into a rigorous workout. My doctor has told me that the best time to exercise is at the end of the day, before dinner, when the body is limber and a little fatigued. Begin slowly by swinging arms around in a circle. Do a little jogging in place. Get your circulation going to fuel your muscles. Do your exercises to music. […] As your body gets used to all this unexpected activity you can do each exercise just about as often and as long as you like. But start gently.”
― Joan Crawford, My Way of Life