U.S. Olympic legend Michael Johnson -- one of the fastest humans of all time -- says he's fully recovered after suffering a crippling stroke in 2018 ... and even sprinting again!!!
51-year-old Johnson -- who won 4 gold medals in 3 Olympics -- tells TMZ Sports he suffered a stroke on the right side of his brain following a workout in Sept. 2018.
At the time, Johnson said he felt discomfort in his left leg, numbness in his left arm and quickly began to lose balance. So, he rushed to the emergency room to get checked out.