Belly fat could also up your risk: Recent research from Harvard found that premenopausal women who had more visceral fat had decreased bone mineral density.

And overall, postmenopausal women showed a different pattern of activity in the brain's hippocampus, compared to women who were premenopausal or going through the transition.

But we Gerries know that we would be awake at 3 a.m. anyway, premenopausal hormones raging.