I got hooked on the Tudor's and especially Henry VIII as a kid, when I saw THE LIFE OF HENRY VIII, on T.V., with Charles Laughton. Then a bit after that, I saw YOUNG BESS, in the movie theatre.
Like you, I too watched and loved "THE SIX WIVES OF HENRY VIII" and "ELIZABETH R" on PBS. As a matter of fact, I think that I have seen every single movie and T.V. series about these two rulers, that have ever been made; not to mention all of the books written about these two/having them in books, along with other Kings and Queens.
Yes, contemporaneous writers claim that Henry was a stunning youth and man, until his wretched accident.
Are you sure that that painting is of the English Henry VIII? He had red hair and that portrait shows someone with very dark hair.
Henry VIII was a VERY athletic, fit, and yes, trim man until his accident, which injured one of his legs and kept him from playing tennis, jousting, dancing ( one of his passions and which he was extremely good at and the dances, back then, were really quite some workout )and much of any kind of intense physical activities. He was only quite stout ( FAT! ) in his later years.