Once you're old enough to be a grandparent, a good night's sleep is hard to come by. Chalk it up to hormones, hot flashes, medications, and more. Considering the causes can be exhausting in itself.

Despite our continual quest to quench our desire for downtime, we grandparents often flat-out refuse to rest our weary heads when we're with our grandchildren. Whether it's because we feel guilty or we simply want to "get stuff done," resisting a rest can be detrimental to our health and happiness. Detrimental to the health and happiness of our grandchildren, too—especially when they're in our care.

Here's why:

NOT GETTING ENOUGH SLEEP...