"Love is Blind" star Jimmy Presnell has jaws on the floor -- and it has nothing to do with a dramatic love triangle. He's looking like a whole new person after hitting the gym and going in for a hair transplant -- and tells TMZ he has 'LIB' to thank for pushing him out of his comfort zone.

Check out our chat with Jimmy -- he goes into the deets about what inspired him to focus on his physicality before his big 30th birthday ... shredding 30 pounds while packing on the muscle, and transforming his look with a hair transplant. Netflix / Instagram @jimmypresnell

Jimmy says it himself -- his hair transplant is the most notable change. He reveals he thought about getting the procedure even before opening his heart up on reality TV, but says the nasty comments he got about his appearanc

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