One of the keys to the Los Angeles Lakers becoming legitimate championship contenders next season seems to be Luka Doncic's fitness and conditioning. While he has been a phenomenal player over the last several seasons, he has been criticized for putting on weight and not taking great care of his body.
He has appeared to be winded late in games, which has been attributed to his poor stamina and endurance. That lack of endurance and overall fitness is thought to be a big reason the Dallas Mavericks traded him to the Lakers in early February.