> That's forty minutes a day you could be spending with your children instead.

Not if you're dead...

All morbid jokes aside, it's important to take care of yourself so you can take care of your kids. If you're not going to bike to work, spend that extra forty minutes biking with your kids or throwing them around the yard.

I don't want to accuse you of not exercising or using your kids as an excuse to not take care of yourself, but it's really easy to unintentionally do just that.