If your blood glucose level is higher than 250 mg/dl, you do not have ketones in your blood or urine, and you want to exercise, I recommend starting your workout then stopping after 15 minutes to see if your blood glucose level is rising or dropping.
Outfielder Ty Cobb, whose career ended in 1928, has the highest batting average in Major League Baseball (MLB) history. He batted .366 over 24 seasons, mostly with the Detroit Tigers. In addition, he won a record 11 batting titles for leading the American League in BA over the course of an entire season.
Ty Cobb may have been the best baseball player of all-time, but there is little doubt that he was the dirtiest. Cobb was the leading vote getter on the inaugural Hall of Fame ballot (above Babe Ruth), set 90 MLB records during his career, and still has the high career batting average (.367). But Cobb's legacy as a great player is overshadowed by his style of play and off-field issues. Cobb was known for sliding with his spikes up when he stole bases, when he sharpened to intentionally cause fielders to bleed, but those were the smaller of the Cobb controversies. He was a known fighter on and off the field -- one time he fought umpire Billy Evans after a game.