Although their results seem to take on a sort of reverse J curve - where no exercise is really really bad, moderate exercise is ideal, and too much exercise is bad - but still not as bad as none at all.

儘管他们的研究结果近似于「反J曲线」——也就是：不运动真的非常非常不好，适度运动是理想的，运动过度虽然也不好——但也没有比完全不运动还糟。