I remember having endless energy ---- being able to stay up partying all night - then going to school and not being tired .... even in college - going to clinicals without sleeping the night before...As I have gotten 'more mature' I seem tired ALL the time. 2 young kids and they wear me out!!! No wonder so many of you had your kids young....I waited .... I love my kids and love their energy - however sometimes I wish that I had endless energy to do absolutely EVERYTHING they want to do!!!