I don't think they really slow down with age. My friend has a glider who is 9 year old and still behaves exactly how she did when I first met her 5 years ago. And my 5 year old doesn't act differently from how she did when she was 6 months old. Some gliders just enjoy being active and jumping around while others like to cuddle. That's why tent time is so good because you can spend time with your gliders and they'll jump around and have their fun. Then when they get tired, it's common that they'll come cuddle up with their human.