Growing bodies need room to grow. For my little guy, we moved him straight from his crib to a full-sized bed - skipping the toddler bed/twin bed experience entirely. He loves that all his stuffed animals can fit on the bed with him, and I love that there is room to curl up next to him to read books at night.
I also love that he has plenty of room to wiggle around and "grow into" his bed. And, I will try my best to check his mattress when he turns 10 to replace it when needed.
You see, I had the same bed and mattress for roughly 15 years of my life. The Lauren-shaped dent in the middle of the twin mattress was well-worn by the time I left for college. And when I finally upgraded to a queen, I had the best sleep ever. (Until my husband and I upgraded to a king, and that was even better.)
We all need a good night's sleep, and a recent study by the researchers at the Hôtel-Dieu Hospital in Paris have found that simply replacing older mattresses may help teens sleep better. Since we all know that our teen years are marked by late nights and not enough sleep, the better the mattress we can give our children, the more we will help them with their never-ending fight against their sleep debt.
And, as adults, let's face it: We aren't as young as we used to be. We should check out mattresses, too, to make sure that we are getting the best sleep possible. We need it.