Orlando Bloom Heats Up With Hot Bod In Cold Plunge ... Fitness Friday!

Here's some celeb inspo for you: Orlando Bloom is showin' he's ready for summer -- strippin' down on social media and flaunting his fit physique!

Check it out ... Mr. Bloom hit the cold plunge in nothin' but short athletic shorts and captioned his sweet and solid post, "Happy place… 😜🥶🙏."

Well now Orlando's happy place is our happy place, and Katy Perry is one lucky lady!

Who wears short shorts?! Orlando Bloom does! Dip into our gallery and see Orlando and more hot stars taking cold plunges!