NFL's Josh Gordon -- I'm Still Hot Boxin' ... To Detox (PHOTOS)

NFL star Josh Gordon is trying a new type of hot box ... but instead of weed smoke, we're talkin' infrared saunas with virtual yoga instructors ... all in the hopes of detoxing his body.

Gordon -- on a mission to get back in the NFL after reportedly failing multiple weed tests -- recently hit up Planet Beach West Los Angeles to get something called -- and we're not making this up -- the "Hot Box Detox."

We're told Gordon did 30 minutes of yoga in a 120-degree sauna led by an on-screen virtual instructor. He followed that up with red light therapy in a standup booth, which is said to help blood circulation ... and a session in a hydro-derma fusion bed to help cleanse his pores.