还有一个考察指标，就是硬度，经常健身尤其是注重大腿和后背肌肉的，几乎不受年龄增长的影响。

一个很好的给男士们的建议，其实对女士们也是很好的建议

更关心智商和年龄的关系。

It depends the person by person. Some people are no longer interested in sexual activity even when they are in the forties or younger, but some people even over fifties or sixties still like to have sex at least once a week.