Is it just me, or is the Doctor getting younger the more he regenerates?

I've always thought regeneration was a process of renewal therefore leading to a younger body. Romana - a time lady from the old series - was awesome at regeneration and could turn into whatever she wanted. the doctor is more of a rebel than romana so i've always thought that he didn't pay much attention to regeneration lessons back at time lord academy and has had to make it up as he went along - like he does with a lot of things. maybe he's better now at regeneration so that's why he's younger and better looking