I am afraid for you, Van Lingle Mungo... 'Cause what I see here is a frightening thing.
Featured above is a vintage ACME press photo from eBay, dated to Spring Training in 1937, of the infamous Dodger hurler Van Lingle Mungo performing some kind of acrobatic exercise over what looks like a camera tripod. Via the caption attached to the reverse:
"BROOKLYN PITCHER EXERCISING. Clearwater, Fla., Mar.7---Photo shows Van Lingle Mungo, Dodger pitcher, working out at Clearwater, Fla., where the Brooklyn Team is in spring training."
I just don't know what to think.