单项选择题
A.should exercise all the muscles of your body B.should exercise that specific part of your body C.should do stomach exercises D.can do any kind of exercise
A.your breathing B.your heart beating C.your exercising time D.whether you are exhausted
A.you will lose more weight running one mile than walking the same distance B.you will use more energy walking one mile than running the same distance C.for the same distance the faster you walk, the more energy you will use D.whether you run one mile or walk the same distance, you use the same energy