flyover said:Only if you're having trouble, or if you think touring around the land and hunting the lizards is fun. They don't add that much stamina. Beating the colossi gives you more.
Then again, since you're relatively early in the game -- and on your first playthrough -- the amount they do add will help you now more than it would later.
I love going around and finding them, but it does take a while.
I did have a lot of trouble on #5. Never came close to dying, but I fell off at least a dozen times which made it go really slow.