Published in 1976, "The Mighty Marvel Comics Strength and Fitness Book" is an exercise-themed comic book presented by Stan Lee. Written by "Agile" Ann Picardo and illustrated by "Jumpin" Joe Giella, the issue features fitness tips from some of your favorite characters like Spider-Man, Hulk and The Thing. Missed yoga this morning? Hit the thumbs to discover physical techniques and routines practiced by legendary superheroes from the Marvel archives. 

[via UFunk]